КОЛЬЦЕВАЯ ЩЕТОЧНАЯ УПЛОТНИТЕЛЬНАЯ ПРОКЛАДКА

Изобретение относится к прокладке, содержащей корпус, выполненный из двух участков (1, 2), запрессованных друг в друга с точной и герметичной подгонкой по положению на граничных поверхностях (15, 6b), и композитную структуру, содержащую внутри корпуса предпочтительно гибкий и упругий сердечник (24) и намотку (20) из щетинок щетки. Эта структура расположена непосредственно напротив внутренних сторон (9, 10), находящихся друг против друга в корпусе, которые сжимают ее и имеют форму дуги со слегка превышающим радиусом кривизны. Композитная структура прочно, но без напряжения удерживается в точном положении. 14 з.п. ф-лы, 3 ил.

УСТРОЙСТВО ДЛЯ УПЛОТНЕНИЯ ГРЕБНОГО ВАЛА И СПОСОБ УПЛОТНЕНИЯ ГРЕБНОГО ВАЛА

Изобретение относится к судостроению, а именно к компоновке и способу уплотнения гребного вала судна. Для уплотнения гребного вала судна используют уплотнение, которое содержит группу манжетных уплотнителей, которые размещены последовательно в направлении гребного вала таким образом, что уплотнительная камера формируется между соседними манжетными уплотнителями. Давление первой уплотнительной камеры на стороне винта ближе к давлению окружающей воды на уровне гребного вала, и давление во второй уплотнительной камере, которая расположена дальше всего от винта, регулируют до фиксированного значения, которое ниже, чем давление в первой уплотнительной камере. Давление в третьей камере, которая расположена между первой и второй камерами, регулируют с помощью устройства регулирования давления до назначения между значениями давления в первой и во второй камерах путем регулирования потери давления, которая связана с потоком жидкой среды. Достигается максимальный срок службы и оптимальное условие ...

УПЛОТНЕНИЕ ШТЕКЕРНОЙ МУФТЫ ДЛЯ ГИДРАВЛИЧЕСКОГО ТРУБОПРОВОДА ПРИВОДНОГО ДВИГАТЕЛЯ

Изобретение относится к уплотнению (1) штекерной муфты для направляющего среду трубопровода приводного двигателя, причем это уплотнение (1) штекерной муфты имеет наружную поверхность (5) для помещения в первую часть (11) муфты и внутреннюю поверхность (7) для прилегания к вдвигаемой в направлении (16) вставки в первую часть (11) муфты второй части (12) муфты. На внутренней поверхности (7) выполнено микроструктурирование (22) с выступающими структурирующими элементами (23) для уменьшения сопротивления вставки второй части (12) муфты в первую часть (11) муфты. Изобретение обеспечивает упрощение процесса соединения. 2 н. и 10 з.п. ф-лы, 8 ил.

УПЛОТНИТЕЛЬНОЕ УСТРОЙСТВО И ЕГО ПРИМЕНЕНИЕ

Группа изобретений относится к уплотнительной технике. Уплотнительное устройство содержит уплотнительное кольцо и фильтрующее кольцо из фильтрующего нетканого материала, установленное по соседству с уплотнительным кольцом со стороны, обращенной к герметизируемому пространству, с аксиальным зазором. Герметизируемое пространство, по меньшей мере, частично заполнено герметизируемой средой, а фильтрующее кольцо охватывает герметизируемую поверхность герметизируемой детали машины с радиальным зазором. Изобретение повышает надежность устройства. 2 н. и 6 з.п. ф-лы, 1 ил.

СМЕСИТЕЛЬ С УПЛОТНЕНИЕМ

Изобретение относится к смесителю с резервуаром для приема смешиваемого материала. Смеситель с резервуаром (1) смесителя для приема смешиваемого материала и крышкой (12) смесителя, в котором между резервуаром (1) и крышкой (12) предусмотрено первое уплотнение (5), при этом предусмотрена опора смесителя, резервуар (1) смесителя установлен с возможностью вращения вокруг оси вращения относительно опоры смесителя, смеситель снабжен приводом, при помощи которого резервуар (1) смесителя может вращаться вокруг оси вращения, крышка (12) смесителя закреплена на опоре смесителя, предусмотрено второе уплотнение (6), при этом первое и второе уплотнения (5, 6) расположены так, что между первым и вторым уплотнениями образуется первое воздушное пространство (10). Технический результат изобретения - устранение возможности попадания частиц смешиваемого материала из резервуара смесителя в окружающую среду. 13 з.п. ф-лы, 4 ил.

УПЛОТНИТЕЛЬНОЕ УСТРОЙСТВО

Изобретение относится к уплотнительному устройству, способному уменьшать износ уплотняющей губы в условиях низких температур. Уплотнительное устройство (1) содержит эластичный корпус (2), образованный из кольцеобразного эластичного элемента, и армирующее кольцо (3), образованное из кольцеобразного металла. Эластичный корпус (2) содержит крепежный участок (4), вставленный в участок, который должен быть закреплен, и уплотняющий участок (5) в плотном контакте с валом с возможностью скольжения упомянутого вала. Смазка наносится на уплотняющую губу (51) уплотняющего участка (5). Смазка содержит по меньшей мере одно из синтетического углеводородного масла и минерального масла в качестве базового масла и имеет низкотемпературный стартовый момент 25 Н⋅см при -30°С. 3 з.п. ф-лы, 3 ил., 1 табл.

Splice plate in particular for conveying roller and conveying rollers provided with the known as splice plate.

PISTON FOR CYLINDERS WORKING WITH FLOWING MEDIA

RADIAL ROTARY SHAFT SEAL

SEALING RING

SEALS DEVICE OF A PISTON

POETRY

SWIVELLING POETRY AND ANTIFRICTION BEARING, WHICH COVER SUCH A POETRY

Längenverstellbares Pleuel mit einer Dichtungsvorrichtung

Die Erfindung betrifft ein längenverstellbares Pleuel (1) für eine Hubkolbenmaschine, das eine Hydraulikeinrichtung (2) zur Verstellung einer effektiven Länge (L) des Pleuels (1) mit wenigstens einem Hydraulikzylinder (3) und einem darin verschieblich angeordneten Hydraulikkolben (4), welcher einen Arbeitsraum (5a, 5b) begrenzt, aufweist, wobei der Arbeitsraum (5a, 5b) durch wenigstens eine Dichtungsvorrichtung (6) abgedichtet ist. Die Dichtungsvorrichtung (6) weist ein Dichtelement (7) und wenigstens ein erstes und ein zweites Federelement (8a, 8b) auf, wobei das erste Federelement (8a) eine Kraft in der Weise auf einen ersten Abschnitt (7a) des Dichtelements (7) ausübt, dass der erste Abschnitt (7a) gegen eine Kolbenstange (9) des Hydraulikkolbens (4) oder den Hydraulikkolben (4) gepresst wird und das zweite Federelement (8b) eine Kraft in der Weise auf einen zweiten Abschnitt (7b) des Dichtelements (7) ausübt, dass der zweite Abschnitt (7b) gegen eine Zylinderwand (10) des Hydraulikzylinders ...

DISK WIPING DEVICE WITH A SEALING SOCKET

Dichtungsanordnung

Es wird eine Dichtungsanordnung (2) für ein Zylinderrollenlager (1) beschrieben mit einem ersten (6) und einem zweiten (4) Ring, wobei ein erstes Dichtungsteil (10) über ein separates Halteelement (14) an dem ersten Ring (6) befestigt ist und ein zweites Dichtungsteil (12) an dem zweiten Ring (4) angeordnet ist. Das erste Dichtungsteil (10) weist eine erste Dichtlippe (16) auf, die eine Anlaufdichtung bildet, die an dem zweiten Ring (4) anläuft und von dem zweiten Dichtungsteil (12) in axialer Richtung abgewandt ist. Das erste und das zweite Dichtungsteil (10, 12) bilden in Kombination eine Labyrinthdichtung. Damit eine gute Abdichtung mit geringer Abnutzung ermöglicht wird, wird vorgeschlagen, dass die beiden Dichtungsteile (10, 12) ineinandergreifen, indem das erste Dichtungsteil (10) eine zweite Dichtlippe (22) aufweist, welche dem zweiten Dichtungsteil (12) in axialer Richtung zugewandt ist und in einen Labyrinthabschnitt (24) des zweiten Dichtungsteils (12) eingreift, wobei zwischen ...

SEALS ARRANGEMENT FOR THE SEALING OF A GAP BETWEEN A BEARING BUSH AND A TAP

SELFCOMPENSATING POETRY.

CASE-WELL-BEHAVED STORE-HURRY AND THEREBY EQUIPPED ACTUATOR

ROTARY SHAFT SEAL DEVICE

PISTON OR ROD SEAL.

GASKET

SEALS ARRANGEMENT FOR A MECHANICAL ELEMENT THAT ITSELF BACK AND FORTH MOVES, RELATIVE TO A GUIDANCE SEAT, IN PARTICULAR FOR SHOCK ABSORBER SEAWEEDS

SEALS ARRANGEMENT

FLOATING VALVE STEM SEAL

Sliding component

... [Problem] To prevent leakage caused by the deposition of a silicate compound on a sliding component, such as a mechanical seal for sealing a silicate-containing fluid to be sealed, such as silicate-added LLC. [Solution] The present invention provides a sliding component which has an annular stationary-side sealing ring 5 fixed to a stationary side and an annular rotary-side sealing ring 3 rotating together with a rotating shaft, and in which opposing sliding surfaces S of the stationary-side sealing ring 5 and the rotary-side sealing ring 3 are relatively rotated to thereby seal a silicate-containing fluid to be sealed that is present on one side in the radial direction of the relatively rotating sliding surfaces S, wherein at least one sliding surface S of the stationary-side sealing ring 5 or the rotary-side sealing ring 3 has an amorphous carbon film 8 formed using a hydrocarbon gas not containing a silicon compound, and the silicon content in the amorphous carbon film 8 is 1.5 at% or ...

Roller bearing seal assembly and a component thereof

In accordance with one aspect of the present disclosure, a roller bearing seal assembly is provided that includes a seal case and a rotor having a unitary, one-piece construction. The rotor is connected to the seal case and is rotatable relative to the seal case about an axis. The seal case and rotor include interfering portions that limit axial separation of the rotor and the seal case. In one embodiment, the rotor and seal case include at least one snap-fit connection that permits the rotor and seal case to be readily assembled. The at least one snap-fit connection includes the interfering portions which inhibit axial separation of the rotor and seal case after the rotor and seal case have been assembled.

FLUID SEAL UNIT

Composite rotary seal assembly

SELF-ALIGNING BEARING AND SEAL

SLIP JOINT SEAL ASSEMBLY

GASKET AND PACKING PANEL ASSEMBLY FOR TRUNNION/SHAFT

MULTI-FUNCTION FLUID SEAL FOR DAMPERS AND THE LIKE

A seal unit having a casing portion and an elastomeric seal body bonded thereto, with the seal body including an excluder lip, a primary liquid seal lip and a secondary gas or vapor sealing lip. The primary and secondary lips insure against leakage in both the static and dynamic conditions of the seal. The gas or vapor sealing lip is seated against the valve body of an associated mechanism. The gas or vapor lip in effect provides a relief valve action and is able to be urged into a position of engagement with another part of an associate machine member by its own inherent resiliency. The relief valve bleeds gas and liquid in one direction but not in the opposite direction.

BEARING AND BEARING SEAL

DREDGER CHAIN JOINT

PIPE JOINT

WATER PUMP SEAL AND METHOD

INNER SEAL RING FOR ROLLING MILL OIL FILM BEARING

An inner seal ring is disclosed for use in an oil film bearing for a roll in a rolling mill. The roll has a neck with an intermediate section tapering from an end face to a reduced diameter end section contained within a sleeve. The sleeve is fixed in relation to the roll neck and is journalled for rotation in a bushing contained within a chock. A flexible neck seal is mounted on the intermediate section of the roll neck for rotation with the roll within a seal end plate fixed to the chock. The inner seal ring comprises a circular midsection with an annular face on one side and with inner and outer flanges projecting from an opposite side. The inner flange is configured to engage the neck seal, the outer flange is configured to coact in spaced relationship with the seal end plate to define a first labyrinth, and the annular face is contoured to coact in an abutting relationship with the roll end face in defining a second labyrinth.

DYNAMIC SEAL DEVICE

L'invention concerne un dispositif d'étanchéité dynamique configuré pour assurer l'étanchéité entre au moins une première pièce et au moins une deuxième pièce ayant un mouvement relatif de rotation par rapport à la première pièce. Le dispositif comporte un joint pourvu d'une première lèvre et d'une deuxième lèvre s'étendant depuis un talon, la première lèvre étant en regard de la deuxième lèvre, le joint étant formé d'un premier matériau prédéterminé présentant un premier coefficient de frottement, et une bague formée d'un second matériau prédéterminé différent du premier matériau prédéterminé et présentant un second coefficient de frottement différent du premier coefficient de frottement. Selon l'invention, le dispositif est caractérisé en ce que la bague est assujettie solidairement avec le joint au niveau du talon et en ce que le premier coefficient de frottement du premier matériau prédéterminé formant le joint est supérieur au second coefficient de frottement du second matériau prédéterminé ...

WIND TURBINE GENERATOR

The present invention provides a wind turbine generator in which an oil seal structure provided in a blade rotating ring bearing 10 of a wind turbine blade is improved and leakage of lubricant oil to outside is prevented or suppressed. A wind turbine generator in which a rotor head has wind turbine blades, the rotor head rotates when the wind turbine blades receive wind power and drives a power generator disposed in a nacelle to generate electricity, the nacelle is disposed on an upper end of a tower that stands on a foundation such that the nacelle can yaw-slew, a blade rotating ring bearing 10 is disposed between the wind turbine blade and the rotor, the wind turbine generator includes a pitch control mechanism that can adjust a pitch angle of the wind turbine blades, wherein seal mechanisms 14 and 20 are mounted on both ends of opposed rolling body holding surfaces 11a and 12a of an outer race 11 and an inner race 12 of the blade rotating ring bearing 10 with rolling bodies 13 interposed ...

SLIDING SEAL AND SEAL STRUCTURE

The purpose of the invention is to provide a long-life sliding seal in which a first member can move smoothly relative to a second member. A sliding seal (11) adapted to seal an annular gap (14) between the two members in which the first member (12) can be moved relative to the second member (13), and partition the high-pressure side and the low-pressure side from each other. The sliding seal (11) is disposed in an annular fitting groove (18) provided to the second member (13), and is provided with: a pressure fluid seal (19) which slides against the sliding surface (24) of the first member (12); and a lubricant holding piece (20) forming a lubricant housing space (26) between the lubricant holding piece (20) and the pressure fluid seal (19), the lubricant holding piece (20) being provided on the high-pressure side relative to the pressure fluid seal (19).

SEAL, METHOD FOR THE PRODUCTION OF SAID SEAL AND SEALING ARRANGEMENT WITH SAID SEAL

There is provided herein a seal, including a substantially H-shaped sealing profile. The sealing profile, when viewed in cross section, comprises two longitudinal webs which are arranged adjacent one another and spaced apart from one another. A cross web connects the two longitudinal webs and forms a pivot joint about which the two longitudinal webs are pivotable in a clothes-peg-like manner relative to one another. Each longitudinal web comprises a peg arm at a first end and a sealing lip at a second end. The peg arm is shaped in the form of a latching lug and engages an installation groove of a machine element. The peg arms thereby provide a static seal for sealing the installation groove.

Ringförmige Abdichtungspackung.

Dichtungsvorrichtung für verstellbare Schaufeln von Turbinenscheiben, Schiffsschrauben, Pumpenrädern und ähnlichen in Wasser laufenden Rotoren.

Vérin pneumatique

Dichtungspackung.

Sekundärmanschette an Druckkolben von Flüssigkeitsbremsen

Joint d'étanchéité d'un mécanisme sur roulements à billes, en particulier d'une cuvette de pédalier de bicyclette

Elastischer Dichtring, insbesondere für Arbeitskolben in Druckmittelanlagen

Manschettendichtung

KOLBEN IM ZYLINDER EINER HUBKOLBENMASCHINE, INSBESONDERE EINES TROCKENLAEUFERS.

IN EINEM ZYLINDER HIN-UND HERBEWEGBARER KOLBEN.

Manschettenartige Dichtung

Dispositivo atto ad assicurare la tenuta fra elementi di macchine, a rotazione reciproca

Sealing ring for double-acting pistons of piston-cylinder units

PISTON FOR PROXIMITY SENSING.

NECK SEAL FOR A ROLLING MILL OIL FILM BEARING WITH SPACED IMPELLERS FOR PROPELLING OIL COMING OUT FROM THE BEARING'S SLEEVE AND BUSHING

WHEEL BEARING DEVICE

Seal and system of sealing lips arranged in series

Sealing assembly for tire inflation and deflation system

SEALING DEVICE FOR A PROPELLER SHAFT OF A MARINE PROPULSION UNIT

JOINED OF CROSSING OF WALL FOR TREE OR SIMILAR ELEMENT HAS RELATIVE MOVEMENTS COMPARED TO THE WALL

SEAL BETWEEN TWO CONCENTRIC PARTS OF REVOLUTION

DISPOSITIF POUR REALISER UNE ETANCHEITE AXIALE ET RADIALE

LA PRESENTE INVENTION CONCERNE UN DISPOSITIF POUR REALISER UNE ETANCHEITE AXIALE ET RADIALE. DANS CE DISPOSITIF COMPORTANT UNE BAGUE PROTECTRICE 15 QUI PEUT ETRE DISPOSEE DANS UNE POSITION ANNULAIRE AUTOUR D'UN PREMIER CORPS 13 ET EN FACE D'UN SECOND CORPS 9, ET INCLUANT UN PREMIER ELEMENT 16 AYANT UNE FONCTION DE SUPPORT ET UN SECOND ELEMENT 17 POSSEDANT UNE FONCTION D'ETANCHEITE, LE SECOND ELEMENT 17 COMPORTE DES PREMIERS MOYENS 25 FORMANT UN JOINT D'ETANCHEITE AXIAL AVEC LE SECOND CORPS 9, ET DES SECONDS MOYENS 27 FORMANT UN JOINT D'ETANCHEITE RADIAL AVEC LEDIT PREMIER CORPS 13. APPLICATION NOTAMMENT AUX SYSTEMES D'ETANCHEITE DE ROULEMENTS A ROULEAUX PLACES EN BOUT D'ARBRES.

Seal

Valve control rod stuffing box seal - has outer lip supported on support eyelet and edge inside flange

Improvements with the closures seals of a cylinder associated with a mobile stem

Ring elastic sealing in particular for piston of work in an installation with fluid under pressure

GUIDANCE AND WATERPROOFING SYSTEM IN AMPLIFIERS Of BRAKING FORCE

SEAL

Joint racleur d'étanchéité.

Il s'agit d'un joint racleur d'étanchéité (1,1'), pour un élément de construction en forme de tige (2). Il présente une partie de support annulaire (8), sur laquelle sont montées une lèvre d'étanchéité (9) et, espacée axialement de celle-ci, une première lèvre de raclage (10). Sur la face, opposée à la lèvre d'étanchéité (9), de la première lèvre de raclage (10), est placée, coaxialement et en avant, une deuxième lèvre de raclage annulaire (17), montée sur la partie de support (8). Au moins dans la zone de sa partie de raclage (19'), en appui dans la position d'utilisation sur la périphérie (14) de l'élément de construction en forme de tige (2), cette lèvre (17) est plus dure ou plus rigide que la zone d'appui correspondante de la première lèvre de raclage (10).

SEALING DEVICE

JOINED SEALING INCLUDING/UNDERSTANDING TWO LIPS OF WHICH ONE IS AXIAL AND the OTHER RADIAL one, AS WELL AS a LABYRINTH

SEALING ARRANGEMENT FOR SEALING A CHAMBER BETWEEN A CASING AND A FLUID AGENT COMPONENT AGAINST A

ROTARY SEAL

SEALING DEVICE AND MOLD FOR THE MANUFACTURE OF SUCH A SEALING DEVICE

RING SEALS OF A BEARING

DEVICE TO CARRY OUT AN AXIAL AND RADIAL SEALING

SLIDING SHAFT SEAL

WATERPROOFING SYSTEM

La présente invention concerne dispositif d'étanchéité (1) comprenant une pièce circulaire d'étanchéité (3), une bague intérieure (2) et une bague extérieure (4), l'une des deux bagues pouvant tourner par rapport à un axe, la pièce circulaire (3) étant disposé entre les deux bagues caractérisé en ce que la pièce circulaire (3) comprend deux lèvres circulaires (300, 301) disposées dans une gorge (20) inclinée par rapport à l'axe de rotation de la gorge (20) prévue sur la face extérieure (21) de la bague intérieure (2) et un profil d'accrochage (32) fixé un orifice (41) aménagé dans la bague extérieure (4). L'inclinaison de la gorge (20) permet d'augmenter la surface de contact potentielle par rapport à une gorge classique perpendiculaire à l'axe de rotation de la couronne, puisque pour une distance donnée entre un bord extérieur et un bord intérieur d'une bague, la gorge peut être plus longue. Ainsi la tenue de la lèvre supérieure à l'expulsion est améliorée. Les deux lèvres sont précontraintes ...

Fuel tank filling spout cap - has elastic sealing ring with two lips between cylindrical surfaces

RING RADIAL SEALING HAS LIP FOR PUMP SHAFT WATER OF MOTOR VEHICLES.

Des bagues d'étanchéité radiales à lèvre pour arbre possèdent des éléments d'étanchéité avec une lèvre d'étanchéité principale et une pièce de maintien. La fabrication de telles bagues d'étanchéité radiales à lèvre pour arbre est compliquée et chère. En vue de réaliser une bague d'étanchéité radiale à lèvre pour arbre de fabrication et de montage économique et simple, au moins deux éléments d'étanchéité (1, 2) présentent sensiblement la même configuration et sont pourvus d'un diamètre extérieur au moins approximativement identique. Les éléments d'étanchéité peuvent être fabriqués dans le même outillage de moulage et ainsi de manière économique. L'implantation est possible sans problème. La bague d'étanchéité radiale à lèvre pour arbre est avantageusement utilisée pour des pompes à eau de véhicules automobiles.

HYDRAULIC MAITRE-CYLINDRE

AN ARRANGEMENT, A SEALING ASSEMBLY, A CASING FLANGE AND A SPACER FOR SEALING THE PROPELLER SHAFT OF A MARINE VESSEL

... 본 발명은 선박의 프로펠러 샤프트를 실링하기 위한 장치, 실링 조립체, 케이싱 플랜지 및 스페이서에 관한 것이다. 선박의 프로펠러 샤프트는 선미관 또는 선미 프레임 (120) 내의 베어링 수단에 의해 지지되고, 상기 선미관 또는 선미 프레임 (120) 은 상기 프로펠러 샤프트를 실링하기 위한 실링 조립체 (118) 를 구비하는 고물 단부를 갖고, 상기 실링 조립체 (118) 및 선미관 또는 선미 프레임 (120) 은 상기 실링 조립체 (118) 의 상태를 모니터링하기 위한 적어도 하나의 누설 모니터 라인 (142) 을 갖고, 상기 적어도 하나의 누설 모니터 라인 (142) 은 원주방향으로 연장하는 채널 부분 (162) 을 구비한다.

ENCODER SEALING APPARATUS

밀봉 장치

... 밀봉 장치(1)는, 탄성 소재에 의해 형성된 환상의 실부(5)를 구비하고 있다. 실부(5)의 안둘레면에는 회전축(S)의 바깥둘레면(S1)에 미끄럼 접촉하는 메인 립(10)과, 메인 립(10)으로부터 진공 공간(V) 측을 향해 점차 지름 확장하고 있는 진공 공간 측 경사면(11)이 형성되어 있다. 진공 공간 측 경사면(11)에는, 회전축(S)의 바깥둘레면에 미끄럼 접촉하는 제1 환상 돌기(20)와, 메인 립(10)과 제1 환상 돌기(20) 사이에 배치되어 지름 방향 내측으로 돌출된 제2 환상 돌기(21)가 형성되어 있다. 제2 환상 돌기(21)는, 밀봉 장치(1)의 사용 초기의 상태에서는 회전축(S)에 미끄럼 접촉하지 않고, 필요한 밀봉성을 유지할 수 없을 정도로 메인 립(10)이 마모되면, 회전축(S)에 대한 미끄럼 접촉을 개시하도록 형성되어 있다.

SEALING STRUCTURE

According to the present invention, a sealing structure (1) comprises a first member (11), a second member (6) rotating with respect to the first member (11), and a seal member (7) attached to the first member (11). The seal member (7) includes a first lip portion (31) having contact portions (31c, 31f) coming into contact with a first seal surface (41) of the second member (6) and a first compression member (51) for compressing the first lip portion (31) against the first seal surface (41). The first lip portion (31) has an accommodation space (S) for accommodating the first compression member (51) and an opening (A) for opening the accommodation space (S) in an axial direction. The width of the opening (A) is reduced by elastic deformation of the contact portions (31c, 31f) that is generated when the contact portions (31c, 31f) come into contact with the first seal surface (41). COPYRIGHT KIPO 2018 (AA) Second axial side (BB) Radial inside (first radial side) (CC) Radial outside (second ...

Rice-planting fork seal in rice transplanting machine

기밀성이 향상된 방연댐퍼용 블레이드 및 이를 이용한 방연댐퍼

... 하나의 블레이드의 단부가 인접하는 다른 블레이드의 단부와 겹치도록 배치되는 방연댐퍼에 이용되는 블레이드(100)에 있어서, 블레이드(100)는 중심부에 회동축(40)이 결합되는 본체(10); 일측 블레이드(100)의 일측 절곡단부의 끝단이 인접하는 타측 블레이드(100)의 타측 절곡단부의 홈부에 위치하는 절곡단부(30); 및 일측 블레이드(100)의 일측 절곡단부(30)의 끝단이 삽입되는 삽입홈(54)을 구비한 결합부(55) 및 삽입홈(54)의 길이방향의 축선(C)에 대하여 경사지게 상기 결합부(55)의 바닥부(53)의 일측 모서리에서 양방향으로 연장되는 립부(58)를 구비하는 패킹 실(50)을 포함한다. 블레이드(100)의 전방측에 가해지는 압력은 패킹 실(50)의 제1 공간(S1)에 작용하여 패킹 실(50)의 제1 립부(56)를 타측 블레이드(100)의 타측 절곡단부의 끝단쪽 홈부에 밀착시키며, 블레이드(100)의 후방측에 가해지는 압력은 패킹 실(50)의 제2 공간(S2)에 작용하여 패킹 실(50)의 제2 립부(57)를 타측 블레이드(100)의 타측 절곡단부의 안쪽 홈부에 밀착시킨다.

Springless rotary oil seal

... 본 발명은 스프링이 생략된 회전용 오일씰에 관한 것이다. 이는, 일정직경의 링의 형태를 취하며, 샤프트에 접하는 메인립 및 더스트립을 갖는 씰본체와; 상기 씰본체에 매립되어 씰본체의 형태를 유지하는 금속링과; 상기 씰본체에 일체로 고정된 상태로 메인립을 샤프트측으로 탄력 가압하는 것으로서, 씰본체의 원주방향으로 등각 배치되는 다수의 일체형가압바디를 포함한다. 상기와 같이 이루어지는 본 발명의 스프링이 생략된 회전용 오일씰은, 씰링(sealing) 성능을 유지하면서 샤프트의 회전부담을 최소화하므로, 저토크(low torque) 운전을 가능하게 하여 샤프트를 회전시키기 위한 에너지의 소비를 저감시킴은 물론 수명이 연장된다. 또한 스프링이 사용되지 않으므로 자체의 중량이 가볍고 제작비용이 크게 절약된다.

vedação de extremidade de cilindro para um mancal de película de óleo de laminadora com impulsores espaçados para impelir o óleo que sai da manga e bucha do mancal

ASSEMBLY FOR AN AIRCRAFT COMPRISING AN AIRFOIL MOVABLY CARRIED BY AN ACTUATING SHAFT PASSING THROUGH A SLOT EQUIPPED WITH A SEALING GASKET HAS SEALING PERFORMANCE IMPROVED

L’invention concerne un ensemble pour aéronef comprenant une paroi d’aéronef (5a) dans laquelle une fente de cheminement (24) est formée, un arbre d’actionnement (22) d’une surface portante (16) qui traverse la fente en étant mobile le long de celle-ci, et un joint d’étanchéité (30) pour sceller cette fente. Selon l’invention, le joint d’étanchéité est formé en deux parties, en comprenant une partie inférieure de joint (30a) et une partie supérieure de joint (30b) agencées en vis-à-vis de part et d’autre de la fente, chacune des deux parties comprenant une lèvre (33a, 33b) formant pistes de contact entre lesquelles l’arbre d’actionnement est enserré et se déplace en les déformant durant une mise en mouvement de la surface portante, ces lèvres présentant une forme en oreilles de lapin permettant leur enroulement autour de l’arbre afin de limiter les espaces d’ouverture parasites et empêchant leur désalignement.

BEARING DEVICE FOR WHEEL

A bearing device for a wheel, in which the sealing ability and durability of a seal are enhanced to extend the life of a bearing. The bearing device for a wheel has the seal (8) mounted to an opening of an annular space formed between an outer member (5) and a hub ring (1'). An inner base (6b) of a wheel mounting flange (6) has a circular arc cross-sectional shape, and the seal (8) makes sliding contact with the base (6b). A step (15) is formed between an inner side surface (6d) and the base (6b) of the wheel mounting flange (6), and a corner of the step (15) is formed in a combined circular arc surface having curvature radii (Ra, Rb). An annular recess (13) is formed in the inner periphery at the outer end of the outer member (5). A substantially L-shaped labyrinth seal (14) is formed so as to face the corner of the step with a small gap therebetween. Because of the construction above, stress concentration in the hub ring (1') is relaxed and the seal (8) is prevented from being directly ...

ACTUATING DRIVE FOR A MOTOR VEHICLE AND METHOD

The invention relates to an actuating drive that is well suited for use in a motor vehicle and to a production method. The actuating drive comprises a bolt, which can be moved back and forth between two different positions, namely on principle at least partially out of and into a sealed housing. The actuating drive comprises a drive, by means of which the bolt can be moved. The actuating drive comprises a ring seal made of deformable material, through which the bolt is fed. The ring seal contributes to the sealing of the interior of the housing of the actuating drive from the outside in order to prevent dust or moisture from entering the interior of the housing. In order to achieve this sealing effect in an especially reliable manner, the ring seal has an X-shaped cross-section or lies tightly against the bolt in a circumferential manner with at least two regions of the ring seal extending in a band shape or a line shape.

SEQUENTIALLY-DEPLOYABLE LIP SEAL SYSTEMS

Apparatus to enhance performance of sequentially-deployable lip seal assemblies. In certain embodiments, biasing members to ensure deployment of sequentially deployable lip seals include an o-ring mounted within a cartridge or housing of one or more yet-to-be- deployed lip seals, with the o-ring disposed immediately adjacent one of the lip seals. When a barrier member or deployment sleeve is interposed between the one or more yet-to-be- deployed lip seals and a shaft, such as a rotating and/or reciprocating shaft of a stuffing box, the o-ring biases the lip seal toward the outside diameter of the shaft. Upon movement of the barrier member or deployment sleeve to a position exposing the Hp seal to the shaft, the o- ring urges the lip seal into engagement with the outside diameter of the shaft. A pressurized fluid may be employed between the housing and the o-rings. Flush paths, multi-part housings, and baffle-type housings are also disclosed.

SHAFT SEAL HAVING INDEPENDENT SEALING LIPS

A shaft seal includes a rigid annular casing to which a body of elastomeric seal material is molded. At least one elastomeric seal lip is formed of the elastomeric material. A PTFE element is bonded to the elastomer material and is formed with an undercut that extends beneath the PTFE element to provide a flex hinge to the PTFE element that is isolated and independent from a hinge of the elastomeric seal lip.

JOINT FOR DEVICE FOR METERING LIQUIDS

The present invention relates to a device for manually metering liquids, for example a pipette or a metering button. The device comprises a joint forming a seal between a hollow cylinder and a piston housed inside the cylinder, the piston being moved vertically so as to suck in or expel the liquid. During the metering operation, the joint remains fixed with respect to the movement of the piston and comprises parts formed by portions having dedicated geometric and mechanical characteristics which make it possible to locally optimize the functions of sliding, sealing and fastening in the cylinder.

SEALING DEVICE

A sealing device which allows the man-hour for mounting the sealing device to be reduced is provided. A sealing device includes: a slinger fitted and fixed to an end portion of an inner shaft; a core metal fitted and fixed to an end portion of an outer ring; an inner seal lip fixed to the core metal and in slidable contact with the slinger; an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with a side surface of a flange portion; and a labyrinth lip fixed to the core metal radially outward of the outer seal lip and forming a labyrinth seal together with the side surface of the flange portion. 1. A sealing device used in a rolling bearing apparatus which includes an inner shaft and an outer ring disposed so as to be concentric with each other and in which a flange portion having a side surface opposed to an end surface of the outer ring with a gap provided therebetween is integrally formed at an end portion of the inner shaft , the sealing device sealing an annular space between the inner shaft and the outer ring , the sealing device comprising:a slinger fitted and fixed to the end portion of the inner shaft and extending in a radially outward direction;a core metal fitted and fixed to an end portion of the outer ring;an inner seal lip fixed to the core metal and in slidable contact with the slinger;an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with the side surface of the flange portion; anda labyrinth lip fixed to the core metal radially outward of the outer seal lip, the labyrinth lip forming a labyrinth seal together with the side surface of the flange portion.2. The sealing device according to claim 1 , wherein the slinger includes: a cylindrical portion which is fitted and fixed to the end portion of the inner shaft; and an annular portion which extends in the radially outward direction from an end portion of the cylindrical portion and is disposed ...

Compressor shaft seal

A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.

OIL SEAL

An oil seal has a first seal member including a main lip and a first dust lip, and a second seal member installed in a machine outer side of the first seal member. The second seal member integrally has an end surface covering section covering an end surface section of a housing, an outer peripheral insertion section inserted from one side in an axial direction to an outer peripheral surface of the housing and engaged with a stepped engagement section in the outer peripheral surface of the housing so as to prevent the second seal member from coming off from the housing, an inner peripheral insertion section inserted to an inner peripheral surface of the shaft hole in the housing from one side in the axial direction, and a second dust lip slidably coming into close contact with the shaft in the machine outer side of the first dust lip. 1. An oil seal comprising:a first seal member which is installed to an inner periphery of a shaft hole in a housing inserting a shaft thereto; anda second seal member which is installed to an end surface section of said housing in an opening peripheral edge section of said shaft hole,wherein said first seal member integrally has an affixation section which is fitted to an inner peripheral surface of the shaft hole in said housing, a main lip which slidably comes into close contact with a peripheral surface of said shaft so as to seal a sealed fluid in an inner side of the machine, and a first dust lip which slidably comes into close contact with the peripheral surface of said shaft so as to seal a foreign material such as a muddy water in the outer side of the machine, andwherein said second seal member integrally has an end surface covering section which covers the end surface section of said housing, an outer peripheral insertion section which is inserted from one side in an axial direction to an outer peripheral surface of said housing and is engaged with a stepped engagement section provided in the outer peripheral surface of said ...

Arrangement, a sealing assembly, a casing flange and a spacer for sealing the propeller shaft of a marine vessel

A propeller shaft of a marine vessel is supported by bearing means within a stern tube or frame. The stern tube or frame has an aft end provided with a sealing assembly for sealing the propeller shaft. The sealing assembly and the stern tube or frame have at least one leakage monitor line for monitoring the condition of the sealing assembly. The at least one leakage monitor line is provided with a circumferentially extending channel section.

SEALING SYSTEM

A sealing system is provided which is intended to achieve an improvement in durability. A dust seal is composed of a first dust seal () and a second dust seal () which is arranged at a location nearer to an atmospheric air side than the first dust seal (), wherein each of the first dust seal () and the second dust seal () has a seal lip formed so as to be slidable with respect to an outer peripheral surface of the shaft. The first dust seal () has seal lips () made of urethane rubber, and the second dust seal () has only a single seal lip () which is made of a rubber higher in flexibility than urethane rubber, and which extends toward the atmospheric air side. 1a main seal that prevents fluid to be sealed from leaking to an atmospheric air side; anda dust seal that is arranged at a location nearer to the atmospheric air side than said main seal, for preventing dust from invading to a side of the fluid to be sealed;wherein said dust seal is composed of a first dust seal and a second dust seal which is arranged at a location nearer to the atmospheric air side than said first dust seal, and each of said first dust seal and said second dust seal has an axially extending seal lip extending toward said atmospheric air side and formed so as to be slidable with respect to the outer peripheral surface of said shaft;the seal lip of said first dust seal is made of urethane rubber; andthe seal lip of said second dust seal is made of a rubber which is higher in flexibility than said urethane rubber, and is composed of only a seal lip that extents toward the atmospheric air side.. A sealing system which serves to seal an annular gap between an inner peripheral surface of a shaft hole formed in a housing and an outer peripheral surface of a shaft which is inserted through said shaft hole and carries out a reciprocating movement relative to said housing, said system comprising: This application is a continuation of U.S. patent application Ser. No. 13/004,055 filed on Jan. 11, 2011. ...

SEAL AND METHOD FOR PRODUCING A SEALING RING

A seal includes at least one sealing profile () with at least one sealing lip () and at least one hook-shaped claw connector (), which, when viewed in the cross-section of the sealing profile (), is adjacent to the sealing lip (). 111121321222331423343111213212223. A seal , comprising at least one sealing profile (. , . , .) with at least one sealing lip (. , . , .) and at least one hook-shaped claw connector (. , . , . , .) , which , when viewed as the cross-section of the sealing profile (. , . , .) , is adjacent to the sealing lip (. , . , .).213334323. The seal according to claim 1 , wherein when viewed as a cross-section of said at least one sealing profile (.) claim 1 , a hook-shaped claw connector (. claim 1 , .) is respectively arranged on both sides of the sealing lip (.).33142334356. The seal according to claim 1 , wherein each claw connector (. claim 1 , . claim 1 , . claim 1 , .) has at least one detent ( claim 1 , ).431423343212223. The seal according to claim 1 , wherein the claw connector (. claim 1 , . claim 1 , . claim 1 , .) and the corresponding sealing lips (. claim 1 , . claim 1 , .) are respectively arranged parallel to each other.531423343212223. The seal according to claim 1 , wherein the claw connector (. claim 1 , . claim 1 , . claim 1 , .) and the corresponding sealing lips (. claim 1 , . claim 1 , .) are designed as one piece and are of the same material.6111213. The seal according to claim 1 , wherein the sealing profile (. claim 1 , . claim 1 , .) comprises an elastic claim 1 , flexible material.7111231114212. The seal according to claim 1 , wherein at least two sealing profiles (. claim 1 , .) claim 1 , viewed as a cross-section claim 1 , are arranged adjacently and that a first claw connector (.) of a first sealing profile (.) is connected with a second claw connector (.) of a second sealing profile (.).81112133111431333134212. The seal according to claim 1 , characterized in that three sealing profiles (. claim 1 , . claim 1 , .) ...

High Temperature Device Shaft Brush Seal Assembly, Brush Seal, And Mounting Arrangement

A shaft seal assembly externally mounted to a high temperature device, such as a gas or steam turbine, having a plurality of rotary shaft sealing brush seals that includes at least one brush seal of wear-compensating construction that possesses a suitably high linear coefficient of expansion so it viscoelestically creeps over time compensating for brush seal wear. In one embodiment, a brush seal closest to the device is formed of an electrically conductive material that electrically grounds a rotary shaft of the device during shaft rotation and at least one other brush seal is formed of filaments of polymeric material, such as heat stabilized nylon, of wear compensating construction. In one preferred embodiment, the filaments of the inner brush seal are made of a self-lubricating metallic or bearing material and at least one other brush seal is formed of an intumescing material that can be of polymeric composition.

ANNULAR SEALING DEVICE

A sealing device including an annular shield and an elastomeric sealing element having: a first lip extending radially and protruding towards the interior and axially from a first side face of the shield; a second annular lip which extends radially and protrudes towards the interior and axially from a second side face of the shield, opposite to the first one; and a third lip arranged between the first and the second lips and axially extending from the first lip side, axially spaced apart therefrom; the second and third lips extending from a common annular root portion defining an elastic hinge thus forming a V therebetween for rotating together as a rocker arm; the undeformed lips are radially internally delimited by respective edges having a substantially circular shape and the edges of the first and second lips having a smaller diameter than the diameter of the edge of the third lip. 1. An annular sealing device inserted between first and second rotating mechanical elements of a washing machine , the sealing device comprising:a rigid annular shield, adapted to be integrally coupled to the first mechanical element, and a first elastically deformable annular lip which, in radial section, obliquely extends so as to protrude from the shield, radially towards the interior of the shield and axially from the side of a first face of the shield;', {'b': '8', 'a second elastically deformable annular lip which, in radial section, obliquely extends so as to protrude from the shield, radially towards the interior the shield and axially from the side of a second face of the shield, opposite to the first face (); and'}, i—the third lip axially extends from the same side as the first lip, so as to remain always axially spaced apart from the first lip and to define, between the first and third lips, an annular chamber filled with lubricating grease; and wherein', 'ii—the second and third lips extend so as to protrude from a common annular root portion of the elastomeric annular ...

SEAL ARRANGEMENT FOR A PROPELLER SHAFT AND METHOD FOR SEALING A PROPELLER SHAFT

The present disclosure relates to sealing the propeller shaft of a ship using a sealing having a group of lip seals arranged consecutively in a direction of the propeller shaft so that a seal chamber is created between adjacent lip seals. The pressure of the first seal chamber on the propeller side can be close to the pressure of the surrounding water at the propeller shaft level, and the pressure of the second seal chamber furthest from the propeller can be adjusted to a fixed value that is lower than the pressure of the first seal chamber. The pressure of a third chamber located between the first chamber and the second chamber can be adjustable by pressure regulation devices to a value between the pressure values of the first and the second chambers by adjusting the pressure loss caused by the flow of a liquid medium. 1. An arrangement for sealing a propeller shaft to be supported against the body of the a ship or propulsion unit with bearings the sealing comprising:a group of lip seals which are arranged consecutively in a direction of a propeller shaft for creating a seal chamber between adjacent lip seals, such that a pressure of a first seal chamber on a propeller will be essentially close to a pressure of surrounding water at a propeller shaft level, a pressure of the second seal chamber furthest from the propeller being adjustable to a fixed value essentially lower than that of the first seal chamber on the propeller side; andpressure regulating devices for adjusting a pressure of a third chamber located between the first seal chamber on the propeller side and the second seal chamber furthest from the propeller to a value between the pressure values of the first and the second seal chambers by adjusting a pressure loss caused by a flow rate of liquid acting as a medium.2. An arrangement according to claim 1 , comprising: at least one of a choker or flow control valve claim 1 , wherein the pressure regulating devices operate in response to a pressure loss ...

Power Transfer Unit

A power transfer unit comprising a first shaft configured to receive an input torque from a first vehicle component, a second shaft configured to selectively receive the torque from the first shaft and transmit the torque to a second vehicle component, an engaging mechanism, a housing configured to enclose at least a portion of the power transfer unit, and a seal system having a first seal and a second seal. The engaging mechanism configured to operate in a first mode and a second mode. When in the first mode, the engaging mechanism selectively couples the second shaft to the first shaft, and when in the second mode, the second shaft is de coupled from the first shaft. The first seal is disposed between the housing and a first end of the second shaft, and the second seal is disposed between the housing and a second end of the second shaft.

SEALING GASKET AND SEED HOUSING FOR A SEEDER AND SEEDER COMPRISING SUCH A SEED HOUSING

A sealing gasket made of a resilient rubber material or rubber-like material. The sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile. The cross-sectional profile includes: a first sealing part located furthest away from a center of rotation of the body and a second sealing part located radially inside the first sealing part, as viewed in the radial direction. An open space is defined by the first and second sealing parts. The second sealing part essentially curves through an angle away from the center of rotation. A seed housing can include such a seal and a seeder can include such a seed housing. 125-. (canceled)26. A sealing gasket substantially made of a resilient rubber material or rubber-like material ,the sealing gasket being formed as a rotationally symmetric body with a substantially constant cross-sectional profile, the cross-sectional profile including:a first sealing part located furthest away from a center of rotation of the body, anda second sealing part located radially inside said first sealing part, as viewed in the radial direction,an open space being defined by the first and second sealing parts,wherein the second sealing part essentially curves through an angle away from the center of rotation, andwherein the sealing gasket further comprises an attachment portion, wherein the sealing parts extend from a first side of the main plane and the attachment portion extends from a second side of the main plane.27. A sealing gasket according to claim 26 , wherein the second sealing part is formed as a sealing lip with a free end claim 26 , or a sealing lip with a free end which has a portion of thicker material.28. A sealing gasket according to claim 26 , wherein the sealing gasket has a base portion and the second sealing part claim 26 , as viewed in the axial direction claim 26 , extends further away from the base portion than the first sealing part.29. A sealing gasket according to claim 28 , ...

RADIAL SHAFT SEAL AND ASSEMBLY THEREWITH

A radial shaft seal and assembly are provided. The seal has an annular mounting portion and a seal body bonded thereto. The seal body extends to a seal lip extending between an oil-side end and a free air-side end. An annular bridge extends between the seal lip and a central portion of the seal body in radially overlying relation to the seal lip. A primary dust lip extends from the air-side end and has an annular rib configured for sealed abutment with a running surface of a shaft. The annular rib has at least one vent. An auxiliary dust lip extends from the central portion of the seal body to a free end configured for sealed abutment with the shaft. The free end of the auxiliary dust lip has at least one vent spaced circumferentially from the at least one vent in the annular rib. 1. A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air-side of the shaft seal from an oil-side of the shaft seal , comprising:an annular mounting portion;a seal body bonded to said mounting portion;a seal lip having an annular sealing surface extending between an oil-side end and a free air-side end, said sealing surface being configured to extend axially along the shaft;an annular bridge connected to said oil-side end of said seal lip by a hinge and to a central portion of said seal body by another hinge, said bridge extending in radially overlying relation to said seal lip;a primary dust lip extending from said air-side end, said primary dust lip having an annular rib configured for sealed abutment with a running surface of the shaft, said annular rib having at least one rib vent; andan auxiliary dust lip extending from said central portion of said seal body to a free end configured for sealed abutment with the running surface of the shaft, said free end of said auxiliary dust lip having at least one lip vent spaced circumferentially from said at least one rib vent in said annular rib.2. The radial shaft seal of wherein said primary dust ...

Seal Arrangement for a Rotating Ship Propeller Shaft

A seal arrangement for a ship's propeller shaft includes at least one oil-filled seal chamber bounded by seal rings around the shaft, as well as an oil reservoir tank, an oil supply line connecting the tank to the bottom portion of the seal chamber, an oil circulation pump interposed in the supply line between the tank and the seal chamber, and an oil return line communicating from the upper portion of the seal chamber back to the tank. Thereby, oil is continuously circulated through the seal chamber, and thereby flushes out any contaminant particles, air or water that might enter the seal chamber. 1. A seal apparatus for sealing around a propeller shaft of a watercraft where said propeller shaft penetrates through a hull of said watercraft from a hull interior side to a hull exterior side , comprising a seal arrangement and an oil circulation arrangement , wherein said seal arrangement comprises a first oil-filled seal chamber bounded between first and second seal rings that are arranged circumferentially around said shaft and axially spaced from one another along said shaft , and said oil circulation arrangement comprises a first oil tank , a first oil supply line communicating from said first oil tank to said first oil-filled seal chamber , a first circulation pump interposed in said first oil supply line between said first oil tank and said first oil-filled seal chamber , a first oil return line communicating from said first oil-filled seal chamber to said first oil tank , and an oil in said first oil tank , said first oil supply line , said first circulation pump , said first oil-filled seal chamber , and said first oil return line.2. The seal apparatus according to claim 1 , wherein said first oil supply line connects to and communicates into a lower portion of said first oil-filled seal chamber claim 1 , and said first oil return line connects to and communicates out of an upper portion of said first oil-filled seal chamber.3. The seal apparatus according to ...

OIL DEFLECTOR

An oil deflector includes: a ring support disposed to surround the outer periphery of a shaft and having a front surface support portion formed on the air side of the front portion thereof and a rear surface support portion formed on the bearing side of the rear portion thereof; a plurality of teeth mounted along the inner peripheries of the front surface support portion and the rear surface support portion of the ring support, respectively; and movable teeth mounted on the front outermost side (on the air side) of the teeth disposed along the inner periphery of the front surface support portion and on the rear outermost side (on the bearing side) of the teeth disposed along the inner periphery of the rear surface support portion, respectively. 1{'b': 130', '110', '131', '133', '131, 'a ring support () disposed to surround the outer periphery of a shaft () and having a front surface support portion () formed on the air side of the front portion thereof and a rear surface support portion () formed on the bearing side of the rear portion thereof in such a manner as to be spaced apart from the front surface support portion () by a given distance;'}{'b': 150', '131', '133', '130', '150', '110, 'a plurality of teeth () mounted along the inner peripheries of the front surface support portion () and the rear surface support portion () of the ring support (), respectively, each tooth () having the end portion coming into contact with the outer periphery of the shaft () so as to prevent oil from leaking to the air side from the bearing side; and'}{'b': 160', '150', '131', '150', '133, 'movable teeth () mounted on the front outermost side of the teeth () disposed along the inner periphery of the front surface support portion () and on the rear outermost side of the teeth () disposed along the inner periphery of the rear surface support portion (), respectively,'}{'b': 160', '131', '110', '171', '131', '160', '160', '131', '133', '131', '133', '160', '161', '160', '110', '161 ...

SEALING DEVICE

A sealing device configured to seal a gap on a flange portion side between an outer member and an inner member by being attached to the outer member. A circular plate portion of a metal ring has an extending portion extending opposite to a flange portion. A seal body has a projecting portion and a weir portion, the projecting portion being positioned inward in a diametrical direction from the extending portion and extending toward the flange portion, the weir portion being positioned outward in a diametrical direction from the extending portion and extending toward the flange portion. The projecting portion and the weir portion overlap the extending portion in a diametrical direction, the projecting portion and the weir portion being provided adjacent to the extending portion, thereby forming a labyrinth. The labyrinth has a plurality of labyrinth constituting portions folding back along inner and outer faces of the extending portion in a diametrical direction, and the labyrinth is configured to meander. 1. A sealing device configured to be provided for a mechanical apparatus having an inner member with a flange portion continuously enlarging in a diametrical direction and an outer member rotating relative to the inner member around a shaft of the mechanical apparatus , the sealing device being configured to seal a gap on the flange portion side between the outer member and the inner member by being attached to the outer member , the sealing device comprising:a core member attached to the outer member;a seal body fixed to the core member; anda metal ring having a cylindrical portion fitted to the inner member and having a circular plate portion extending outward in a diametrical direction from an end portion on the flange portion side of the cylindrical portion;the circular plate portion having an extending portion extending opposite to the flange portion;the seal body having a projecting portion and a weir portion, the projecting portion being positioned inward in ...

SEALING DEVICE

The invention provides a sealing device having a sliding lip and a labyrinth lip, wherein the sealing device can inhibit the lip from being deformed as the lip even if the labyrinth lip is exposed to the foreign material in the machine outside and is swollen, thereby making the sliding lip protecting function hard to be lost. In order to achieve the object, in a sealing device having a sliding lip which seals so as to prevent foreign material in a machine outside from entering into a machine inside, and a labyrinth lip which makes the foreign material hard to reach the sliding lip, a notch portion for absorbing swelling of the labyrinth lip when the labyrinth lip is exposed to the foreign material and is swollen is provided in a leading end portion of the labyrinth lip. 1. A sealing device comprising:a sliding lip which seals so as to prevent muddy water or salt water in a machine outside from entering into a machine inside; anda labyrinth lip which makes said muddy water or the salt water hard to reach said sliding lip,wherein a notch portion for absorbing swelling of said labyrinth lip when said labyrinth lip is exposed to said muddy water or the salt water and is swollen is provided in a leading end portion of said labyrinth lip.2. The sealing device according to claim 1 , wherein a second labyrinth lip is provided in the machine inside side of said labyrinth lip.3. The sealing device according to claim 2 , wherein the similar notch portion is provided in a leading end portion of said second labyrinth lip.4. The sealing device according to claim 3 , wherein the notch portion provided in the leading end portion of said labyrinth lip and the notch portion provided in said second labyrinth lip are arranged so as to be displaced circumferentially.5. The sealing device according to claim 1 , wherein said sealing device is used as a hub bearing seal for a vehicle such as a motor vehicle.6. The sealing device according to claim 2 , wherein said sealing device is used as ...

OIL SEAL

An oil seal, which is provided on an outer circumference of a crankshaft to prevent leakage of two fluids such as a lubricating oil and an engine oil, includes: a first seal that seals a flywheel side; a second seal that seals an engine side; a pressure release hole provided to at least one of the first seal and the second seal so that a space surrounded by the first seal, the second seal and the crankshaft is in communication with one of the flywheel side and the engine side through the pressure release hole; and a partitioning lip provided between the first seal and the second seal to divide the space. 1. An oil seal being configured to be set on an outer circumference of a rotary shaft to prevent leakage of a first liquid and a second liquid , the oil seal defining a first fluid side and a second fluid side for the rotary shaft , the oil seal comprising:a first seal configured to seal the first fluid side;a second seal configured to seal the second fluid side;a pressure release hole provided to at least one of the first seal and the second seal so that a space surrounded by the first seal, the second seal and the rotary shaft is in communication with one of the first fluid side and the second fluid side through the pressure release hole; anda partitioning lip provided between the first seal and the second seal to divide the space into two parts in an axial direction of the rotary shaft.2. The oil seal according to claim 1 , wherein the pressure release hole is provided to the first seal or the second seal that prevents leakage of the first fluid or the second fluid having a lower contamination degree than the other.3. The oil seal according to claim 1 , wherein the partitioning lip is provided with a communication hole through which the divided parts of the space are in communication with each other.4. The oil seal according to claim 3 , wherein the pressure release hole and the communication hole are not opposite to each other along an axial line of the rotary ...

Multiple stage seal for a bearing assembly

A flexible double lipped annular seal includes an anchor segment at a radially outermost portion thereof and having a pocket formed therein. The annular seal includes a branch segment extending axially outward and radially inward from the first leg at an angle. A first lip seal and a second lip seal extend radially inward from the branch segment and have a gap therebetween. The branch segment terminates in a stub segment. The annular seal includes a metallic shield secured to the annular seal and a portion of which seats in the pocket.

Sealing apparatus

In a sealing apparatus, a lip tip portion of a seal lip of an elastic body part is defined by a sealing side surface and an atmospheric side surface, connected through a lip tip with each other. The lip tip portion includes a circumferential projection and a screw portion on the atmospheric side surface. The circumferential projection extends parallel to the lip tip. The screw portion includes a plurality of parallel screw projections and a plurality of bilge screw projections. The parallel screw projections are arranged at equal pitch intervals in parallel with each other between the lip tip and the circumferential projection. The bilge screw projections are arranged at equal pitch intervals in parallel with each other from the circumferential projection toward the atmospheric side. The bilge screw projections do not overlap the adjacent bilge screw projections in a direction of axis with each other.

Radial Fluid Seal

A seal body includes a flange that supports a lip configured to make sliding contact with a fixed surface. The flange includes a groove for receiving a garter spring on one face, and inwardly and outwardly facing conical surfaces on the opposite surface, the conical surfaces defining a lip where they meet. The ratio of the thickness of the portion of the lip located to one side of a plane that includes an edge of the groove to the thickness of the portion of the lip on the other side of the plane is about 44%.

Multi-position crankshaft lip seal

Various systems and methods are provided for utilizing a crankshaft lip seal over the course of a first overhaul life and a second overhaul life. In one example, a method includes installing the crankshaft lip seal between a flywheel housing and a crankshaft of an engine and operating the engine with the crankshaft lip seal. The method further includes removing the crankshaft lip seal, re-machining a floating seal sleeve coupled to the crankshaft or the flywheel housing, and replacing a lip. The crankshaft lip seal is then re-installed between the flywheel housing and the crankshaft and the engine operated with the re-installed crankshaft lip seal.

SEALING ASSEMBLY ADAPTED TO BE INSERTED BETWEEN TWO RELATIVELY SLIDABLE MEMBERS

A sealing assembly insertable between a rod and a guiding bush of a shock absorber to form a sealing and guiding unit for the rod is provided. The assembly includes an elastomeric ring having a first and a second annular lip which extend axially and radially overhanging; and a reinforcing ring integrally coupled to the elastomeric ring, radially on the side of the first and of the second sealing lip. The reinforcing ring is integrally coupled in one piece with the elastomeric ring, on the exterior of the elastomeric ring and on the side of a lateral surface thereof facing towards the lips, the reinforcing ring coupling in sliding manner with the rod to serve as guide therefor. The sealing ring coupling by interference with the guiding bush. 1. A sealing assembly insertable between a first and a second mechanical member moving in linear reciprocating manner , insertable between a rod and a guiding bush of a shock absorber , the sealing assembly comprising:a sealing ring made of an elastomeric material and having at least a first and a second elastically deformable annular sealing lip that extend at least in part axially and radially overhanging from the sealing ring, the first lip starting from a first axial end of the sealing ring and the second lip starting from a second axial end of the sealing ring, opposite to the first end; anda reinforcing ring integrally coupled to the sealing ring, radially on the side of the first and second sealing lip; wherein, in combination:i) the reinforcing ring is integrally coupled in one piece with the sealing ring, on the exterior of the sealing ring and on the side of a first radial lateral surface of the sealing ring facing the same side as the overhanging extension of the first and second lips;ii) the reinforcing ring is designed to couple in a sliding manner with the first member in order to guide the relative sliding between the first and the second member;iii) the sealing ring is designed in combination with the reinforcing ...

ROLLING BEARING HAVING IMPROVED SEALABILITY

A sealing member of a rolling bearing is formed in a structure in which an elastic sealing portion is attached to a frame, and the elastic sealing portion may comprise a first sealing portion formed on one end portion of the frame and a second sealing portion formed on the other end portion of the frame. The first sealing portion may be inserted into and mounted to a coupling groove formed in the second member, and the second sealing portion may comprise an axial sealing lip extending in the axial direction from the frame and a radial sealing lip extending in the radial direction from the frame. The axial sealing lip and the radial sealing lip of the second sealing portion may be positioned adjacent to the first member and may be configured to perform a sealing in a non-contact manner. 1. A rolling bearing , comprising:a first member having a raceway for rolling elements formed on one side of the first member;a second member provided to be spaced apart from the first member in a radial direction and having a raceway for the rolling elements formed on one side of the second member;the rolling elements provided between the first member and the second member; anda sealing member provided in an axial end portion of the rolling bearing between the first member and the second member,wherein the sealing member is formed in a structure in which an elastic sealing portion is attached to a frame,the elastic sealing portion comprises a first sealing portion formed on one end portion of the frame and a second sealing portion formed on the other end portion of the frame,the first sealing portion is inserted into and mounted to a coupling groove formed in the second member,the second sealing portion comprises an axial sealing lip extending in an axial direction from the frame and a radial sealing lip extending in the radial direction from the frame,the axial sealing lip and the radial sealing lip of the second sealing portion are positioned adjacent to the first member and are ...

PRELIMINARY SEAL, PRELIMINARY SEAL ARRANGEMENT AND SEALING RING COMPRISING THE PRELIMINARY SEAL

Preliminary seal, comprising an essentially circular disc () of an electrically conductive material () permeable to air and a carrier body (), wherein the disc () is configured as a separately produced individual part—in relation to the carrier body ()—is joined to the carrier body (). 1123133. A preliminary seal , comprising a disc () , which is configured so as to be substantially annular and is of an electrically conductive and air-permeable material () , and a carrier body () , wherein the disc ()—in relation to the carrier body ()—is configured as a separately produced individual part and is connected to the carrier body ().21. The preliminary seal according to claim 1 , wherein the disc () displays an electrical resistance which is ≦100Ω.31. The preliminary seal according to claim 1 , wherein the disc () displays an electrical resistance which is ≦10Ω.434. The preliminary seal according to claim 1 , wherein the carrier body () is formed by a support ring () which is composed of a hard and tough material.535. The preliminary seal according to claim 1 , wherein the carrier body () is formed by a sealing ring ().656. The preliminary seal according to claim 5 , wherein the sealing ring () is configured as a radial shaft sealing ring ().716. The preliminary seal according to claim 1 , wherein the disc () displays an air permeability which corresponds to at least the air-conveying capability of the radial shaft sealing ring ().813. The preliminary seal according to claim 1 , wherein the disc () and the carrier body () are adhesively bonded to one another.921. The preliminary seal according to claim 1 , wherein the material () of which the disc () is composed is formed by a non-woven material.10. The preliminary seal according to claim 9 , wherein the non-woven material displays fibers having a fiber length of 2 mm to 200 mm.11. The preliminary seal according to claim 9 , wherein the non-woven material displays a mass per unit area of 20 g/mto 200 g/m.1221. The ...

ROTARY SEALING ARRANGEMENT

A rotary sealing arrangement comprises a housing, a shaft mounted for rotation within the housing about a shaft axis (A) and a rotary seal provided between the housing and the shaft. The rotary seal comprises a static seal element mounted to the housing and a rotary sealing element mounted for rotation with the shaft. The static seal element comprises a mounting part and a flexible lip seal extending from the mounting part in an axial direction relative to the shaft. The rotary seal element comprises a seal body comprising an axially facing sealing face. The lip seal resiliently engages the sealing face of the seal body. The static seal element and the rotary seal element are mounted such that the relative axial positions of the static seal element and the rotary seal element can be adjusted. 1. A rotary sealing arrangement comprising:a housing;a shaft mounted for rotation within the housing about a shaft axis (A);a rotary seal provided between the housing and the shaft;the rotary seal comprising a static seal element mounted to the housing and comprising a mounting part and a flexible lip seal extending from the mounting part in an axial direction relative to the shaft;a rotary seal element comprising a seal body comprising an axially facing sealing face and mounted for rotation with the shaft, the lip seal resiliently engaging the sealing face of the seal body;the static seal element and the rotary seal element being mounted such that the relative axial positions of the static seal element and the rotary seal element can be adjusted.2. A sealing arrangement as claimed in claim 1 , wherein the mounting part is movable relative to the housing.3. A sealing arrangement as claimed in claim 2 , wherein the mounting part of the static sealing element comprises an externally threaded portion which is threadably received in a threaded bore in the housing to permit adjustment of the axial position of the static sealing element within the housing.4. A sealing arrangement as ...

SEALING STRUCTURE OF RECIPROCATING PLUNGER PUMP

A sealing structure of a reciprocating plunger pump, comprising a pump seat, a pump body assembly, a first sealing ring, and a second sealing ring; the first sealing ring including a first sealing body which is an integrally formed annular body structure including an upper layer, a lower layer, and a V-shaped groove; wherein the V-shaped groove divides the bottom surface of the lower layer into an inner portion and an outer portion, and the inner portion thereof is higher than the outer portion; the second sealing ring includes a second sealing body which is integrally formed and includes an upper ring piece and a lower ring piece having an included angle disposed therebetween; the sealing body includes an annular rib disposed in the middle of an outer wall thereof. The sealing structure allows the reciprocating plunger pump to have a good sealing effect and a long service life. 1121134353. a sealing structure of a reciprocating plunger pump , comprising a pump seat () , a pump body assembly () disposed at a bottom of the pump seat () , a hole disposed in the pump seat () , a plunger rod () installed inside the hole , a first sealing ring () disposed in a small retaining groove of the plunger rod () , and a second sealing ring () disposed in a large retaining groove of the plunger rod ();{'b': 4', '6', '7', '8', '9', '8, 'wherein the first sealing ring () includes a first sealing body () which is an integrally formed annular body structure including an upper layer (), a lower layer (), and a V-shaped groove () disposed on a bottom surface of the lower layer ();'}{'b': 9', '8', '10', '11', '10', '11', '9', '12', '13', '9', '8', '12', '13', '7', '8', '14, 'wherein the V-shaped groove () divides the bottom surface of the lower layer () into an inner portion () and an outer portion (), and the inner portion () thereof is higher than the outer portion (); the V-shaped groove () includes a V-shaped tension spring () disposed therein and support edges () disposed between ...

SEALING DEVICE

A sealing device includes a seal lip located inside a hole of an outer member and in slidable contact with the inner member. The seal lip has an inclined surface arranged on a side of the internal space, an atmosphere-side inclined surface, and a lip edge on a boundary between the inclined surfaces. Multiple first helical ribs and multiple second helical ribs extending from the lip edge and in contact with the outer peripheral surface of the inner member are formed on the atmosphere-side inclined surface. In addition, multiple first dike ribs and multiple second dike ribs are formed on the atmosphere-side inclined surface, which are arranged away from the lip edge and are not in contact with the inner member. The first dike ribs are arranged to intersect the extended lines of the first helical ribs, respectively, and are inclined in the opposite direction to the first helical ribs. The second dike ribs are arranged to intersect the extended lines of the second helical ribs, respectively, and are inclined in the opposite direction to the second helical ribs. 1. A sealing device , disposed between an inner member and an outer member that rotate relative to each other , for sealing a gap between the inner member and the outer member , the sealing device comprising:a mounted part to be mounted on the outer member; anda seal lip located inside a hole of the outer member, the seal lip being in slidable contact with an outer peripheral surface of the inner member for separating the internal space of the outer member from an atmosphere side to seal liquid within the internal space,the seal lip comprising a liquid-side inclined surface arranged on a side of the internal space, an atmosphere-side inclined surface arranged on an atmosphere side, and a lip edge on a boundary between the liquid-side inclined surface and the atmosphere-side inclined surface and extending in a circumferential direction,the liquid-side inclined surface being inclined such that the more distant it ...

SEA WATER SEAL WITHOUT OIL LUBRICATION FOR PODS

Sealing device for a propeller shaft of a marine vehicle propulsion unit including a plurality of sealing lips axially offset relative to each other, with a receiving space for a hydraulic fluid delimited by two adjacent sealing lips, at least one buffer space axially offset with respect to the receiving space and delimited by two adjacent sealing lips, whereby the sealing device includes suitable feeding means for supplying the buffer space with a buffer fluid. The device includes a sampling circuit able to sample fluid included in the buffer space and a monitoring device able to check parameters of the fluid sampled by the sampling circuit. 1. Sealing device for a propeller shaft of a marine vehicle propulsion unit , comprising a plurality of sealing lips axially offset relative to one another , whereby a receiving space for a hydraulic fluid is delimited by two adjacent sealing lips , at least one buffer space is axially offset with respect to the receiving space and delimited by two adjacent sealing lips , whereby the sealing device contains feeding means able to supply the buffer space with a buffer fluid , wherein it contains a sampling circuit able to sample fluid contained in the buffer space and a monitoring device able to check parameters of the fluid sampled by the sampling circuit.2. The sealing device according to claim 1 , whereby the feeding means contain a tank for buffer fluid claim 1 , the tank of buffer fluid being pressurized.3. The sealing device according to claim 1 , whereby the feeding means contain a buffer fluid circulation circuit claim 1 , the circulation circuit comprising a thermosyphon.4. The sealing device according to claim 1 , whereby the buffer fluid contains at least 95% fresh water.5. The sealing device according to claim 1 , whereby the buffer fluid includes an icing inhibitor and/or a corrosion-inhibiting additive.6. The sealing device according to claim 1 , whereby the buffer fluid is a liquid selected to have a solidification ...

Wiper Ring Assembly with Energizing Member

A downhole pump is used for a reciprocating pump system having a rod string disposed in a tubing string. A barrel of the pump is disposed, and a plunger of the pump coupled to the rod string is movably disposed in the barrel. The plunger has an external surface disposed at an annular gap relative to the barrel's internal surface. The external surface has circumferential grooves defined thereabout that hold wipers. An inner ring of the wipers composed of a swellable material is engaged in the one or more circumferential grooves, while an outer ring composed of a second material is disposed about the inner ring. The swellable material of the inner ring energizes the outer ring in slideable engagement with the internal surface of the barrel. 1. A downhole pump for a reciprocating pump system having a rod string disposed in a tubing string , the pump comprising:a barrel disposed in the tubing string and having an internal surface;a plunger coupled to the rod string and movably disposed in the barrel, the plunger having an external surface disposed at an annular clearance relative to the internal surface, the external surface having one or more circumferential grooves defined thereabout; and an inner ring composed of a swellable material and engaged in the one or more circumferential grooves, and', 'an outer ring composed of a second material and disposed about the inner ring, the swellable material of the inner ring energizing the outer ring across the annular clearance into slideable engagement with the internal surface of the barrel., 'one or more wipers disposed in the one or more circumferential grooves on the external surface of the plunger, each of the one or more wipers comprising2. The pump of claim 1 , wherein the swellable material is selected from the group consisting of elastomer claim 1 , ethylene propylene diene M-class rubber (EPDM) claim 1 , ethylene propylene copolymer (EPM) rubber claim 1 , styrene butadiene rubber claim 1 , natural rubber claim 1 , ...

CYLINDER APPARATUS

A cylinder apparatus is configured to compatibly achieve an increase in mechanical strength and a reduction in weight of a metal ring of an oil seal member used in the cylinder apparatus. A hydraulic shock absorber () as a cylinder apparatus has a rod guide () provided at one end (A) thereof. An annular oil seal member () is provided closer to the one end (A) than the rod guide () so as to face the rod guide (). The oil seal member () is secured by staked portions (C) of the outer tube () between the staked portions (C) and the rod guide (). The oil seal member () includes a metal ring () and a seal member (). The metal ring () is provided with a plurality of radially extending ribs () by locally deforming the metal ring (). 16-. (canceled)7. A cylinder apparatus comprising:a cylinder having an opening at one end thereof and having a hydraulic fluid sealed therein;a rod that projects from at least the one end of the cylinder;an annular member provided at the one end of the cylinder;an annular oil seal member provided at a position closer to the one end of the cylinder than the annular member so as to face the annular member, anda staked portion provided at the one end of the cylinder to secure the oil seal member between the staked portion and the annular member in an axial direction of the cylinder;the oil seal member including a metal ring and a seal member that surrounds the metal ring;the metal ring having a plurality of radially extending ribs provided by locally deforming the metal ring,the ribs being formed to extend closer to an inner diameter side than a distal end of the staked portion from a position where the oil seal member is secured in the axial direction by the staked portion.8. The cylinder apparatus of claim 7 , wherein the oil seal member includes the metal ring and a first annular plate provided closer to the staked portion than the metal ring and/or a second annular plate provided closer to the annular member than the metal ring claim 7 , the ...

SEALING DEVICE

A sealing device has a main lip sealing sealed fluid in a machine inside and a sub lip preventing intrusion of foreign materials in a machine outside, and structured such that both of the lips slidably come into contact with a peripheral surface of a shaft, wherein the sub lip is formed into a shape which is vertical to an axial direction or a shape which is directed to the main lip side, and a stepped shape is provided in the sub lip, the stepped shape unevenly distributing a generation position of a contact pressure peak in relation to the shaft in the sub lip. The sealing device can achieve both the shaft inserting property and the sealing performance in a sealing device having a main lip which seals sealed fluid in a machine inside, and a sub lip which seals foreign materials in a machine outside. 1. A sealing device comprising:a main lip which seals sealed fluid in a machine inside;a sub lip which prevents intrusion of foreign materials in a machine outside; andboth the lips slidably coming into contact with a peripheral surface of a shaft,wherein the sub lip is formed into a shape which is vertical to an axial direction of the shaft or a shape which is directed to the main lip side, and a stepped shape is provided in the sub lip, the stepped shape unevenly distributing a generation position of a contact pressure peak in relation to the shaft in the sub lip.2. The sealing device according to claim 1 , wherein the stepped shape is provided as a projection having a triangular cross section and provided in a contact portion in the sub lip with the shaft. This application is a U.S. National Stage Application of International Application No. PCT/JP2016/055762, filed on Feb. 26, 2016, and published in Japanese as WO 2016/147835 A1 on Sep. 22, 2016 and claims priority to Japanese Application No. 2015-054447, filed on Mar. 18, 2015. The entire disclosures of the above applications are incorporated herein by reference.The present invention relates to a sealing device ...

Sealing structure of reciprocating plunger pump

A sealing structure of a reciprocating plunger pump comprises a pump seat, a pressure relief valve assembly, a pressure regulating valve assembly, and a plunger rod assembly; the plunger rod assembly includes a plunger rod, a large sealing ring and a small sealing ring; the structure of the large sealing ring is the same as that of the small sealing ring, and the large sealing ring includes a ring-shaped sealing body, an annular recess, and an annular tension spring; the annular tension spring always has an outwardly expanding force on both side walls of the annular recess; the sealing body includes a saw-tooth sealing groove. The sealing structure reduce the load on the pump and improve the service life of the sealing ring.

INTERSHAFT BLADELET SEAL

A gas turbine engine includes a first rotor shaft and a second rotor shaft around the first rotor shaft. A knife edge seal is radially between the first rotor shaft and the second rotor shaft, and is connected to one of the first rotor shaft or the second rotor shaft. The knife edge seal is sized radially to form a gap between the knife edge seal and the other of the first rotor shaft or the second rotor shaft. A plurality of blades having a general airfoil shape is between the first rotor shaft and the second rotor shaft proximate the knife edge seal. The plurality of blades is connected to the first rotor shaft or the second rotor shaft, and a second gap is formed radially between the plurality of blades and the other of the first rotor shaft or the second rotor shaft. 1. A gas turbine engine comprises:a low rotor shaft;a high rotor shaft around the low rotor shaft;a knife edge seal radially between the low rotor shaft and the high rotor shaft, wherein the knife edge seal is connected to the low rotor shaft and sized radially to form a gap between the knife edge seal and the high rotor shaft; anda plurality of blades with each blade having a general airfoil shape, wherein the plurality of blades is between the low rotor shaft and the high rotor shaft proximate the knife edge seal, wherein the plurality of blades is connected to the low rotor shaft or the high rotor shaft, and wherein a second gap is radially between the plurality of blades and the other of the low rotor shaft or the high rotor shaft.2. The gas turbine engine of claim 1 , wherein the plurality of blades is connected to the high rotor shaft and is positioned axially forward of the knife edge seal relative a center axis of the gas turbine engine.3. The gas turbine engine of further comprising:a second knife edge seal radially between the low rotor shaft and the high rotor shaft, wherein the second knife edge seal is connected to the low rotor shaft, wherein the second knife edge seal is sized ...

DOUBLE SEAL LUBRICATED PACKING GLAND AND ROTATING SLEEVE

One or more techniques and/or systems are disclosed for mitigating fluid loss or leakage from a fluid pump with a rotating shaft driving a pumping mechanism. A packing gland component can have an internal seal formed by two dynamic O-rings that allows for use of lubricants at high pressures, as well as an outer seal for greater prevention of fluid loss. Further, the packing gland component can be a retrofit for existing packing gland components to provide for greater life and efficiency as compared to the existing packing gland components. Additionally, in some implementations, a sleeve may be fixedly attached to the rotating shaft between the packing gland and the shaft to provide a wear point for the packing gland. 1. A one-piece seal carrier packing gland assembly that operably engages with a rotating shaft of a rotating shaft pump , and with the inside of a shaft casing of the pump , to mitigate pumped fluid leakage along the rotating shaft of the pump , comprising: a first channel disposed inside the tube portion proximate the distal end, the first channel housing a first gasket that is operably in contact with the rotating shaft to mitigate pumped fluid leakage along the shaft;', 'a second channel disposed distally from the first channel inside the tube portion, proximate the shoulder portion, the second channel housing a second gasket that is operably in contact with the rotating shaft to mitigate pumped fluid leakage along the shaft;', 'a third channel disposed between the first channel and the second channel inside the tube portion, the third channel in fluid communication with a lubrication inlet port to operably receive lubrication fluid through the lubrication inlet port to operably lubricate the contact between the shaft and the first gasket and the shaft and the second gasket; and', 'a lubrication outlet port in fluid communication with the third channel to allow lubrication fluid to exit the third channel;, 'a body comprising a proximal end and a ...

SEALING LIP FOR A LOW FRICTION BONDED PISTON SEAL

An annular seal for a low friction bonded piston seal is provided. The annular seal having a central axis and including an annular seal body symmetrically positioned about the central axis. The annular seal is integrally molded to the body and provides a lower seal lip body, and a top seal lip. The top seal lip including a first radial lip thickness T and a second radial lip thickness T. A ratio between second radial lip thickness T to first radial lip thickness T is less than 1.00. The annular seal includes a radial lip height H, and a radial lip overall pressure received thickness T. A ratio of radial lip height H to second radial lip thickness T is greater than or equal to 0.65. The radial lip overall pressure received thickness T is less than or equal to 0.8 mm. The first radial lip thickness T is less than or equal to 0.7 mm, 1. An annular seal for a low friction bonded piston seal , the annular seal having a central axis and comprising:an annular seal body symmetrically positioned about the central axis, and a lower seal lip body, and', [{'b': '1', 'a first radial lip thickness T,'}, {'b': '2', 'a second radial lip thickness T,'}, 'a radial lip height H, and', {'b': '3', 'a radial lip overall pressure received thickness T,'}, {'b': 2', '1, 'wherein a ratio of the second radial lip thickness T to first radial lip thickness T is less than 1.00,'}, {'b': '2', 'wherein a ratio of radial lip height H to second radial lip thickness T is greater than or equal to 0.65,'}, {'b': '3', 'wherein the radial lip overall pressure received thickness T is less than or equal to 0.8 mm,'}, {'b': '1', 'wherein the first radial lip thickness T is less than or equal to 0.7 mm,'}, {'b': 3', '1', '3, 'wherein the radial lip overall pressure received thickness T is determined by the horizontal distance between reference points P and P,'}, {'b': 1', '1', '2, 'wherein the first radial lip thickness T is determined by the horizontal distance between reference points P and P,'}, {'b': 1', ...

Reciprocating saw

A reciprocating saw includes a housing assembly and a motor positioned within the housing assembly. The motor includes a pinion. A drive mechanism is positioned within the housing assembly and includes a gear driven by the pinion, a hub coupled to the gear, a spindle, and a connecting rod. A clutch assembly is coupled to the drive mechanism to selectively transmit drive force form the gear to the hub. The clutch assembly includes a first disk coupled to the gear, a second disk coupled to the hub, a biasing member, and a threaded fastener. The biasing member is positioned between the hub and the gear to bias the first and second disks into frictional engagement. The threaded fastener extends through the gear and threadably engages the hub to couple the hub to the gear. Tightening the threaded fastener pulls the hub toward the gear to preload the biasing member.

Seal

A rotary seal comprises a seal element comprising a disc-shaped body having a first axial side and an opposed second axial side. The seal element further comprises a radially inner central circular opening for receiving a rotary shaft, the opening having an inner periphery for sealing engagement with the shaft. A radially outer rim portion of the seal element comprises an axially facing annular sealing surface provided on the first axial side for sealing engagement in use with an opposed axially facing sealing surface of an adjacent first static housing and an axially facing pocket provided on the second axial side and having an axially facing surface for receiving, in use, an annular elastomeric biasing element. At least one drainage passage is formed through the outer rim portion from an inlet on the second axial side to an outlet on a radially outer portion of the rim portion.

Seal

A seal that enables an enclosure to be sealed and to keep an air pressure balance between an internal space within the enclosure and an external space outside the enclosure in such a way that water ingress into the enclosure is hindered in a predictable manner. This is accomplished by providing a seal having at least one small diameter tube with at least an inner surface being hydrophobic, oleophobic or omniphobic. The seal is mounted in the enclosure between the inner and outer space. To further avoid small particle contaminants to enter and go through the at least one small diameter tube, it is preferable to have a small diameter tube with curves and bends, and it will still allow an airflow through it if there is an air pressure imbalance.

SEAL ASSEMBLY

A dual function coating on a counterface of a seal. The dual function provides having a low friction and being hydrophobic. This is achieved by chemically modifying a low friction coating. Gaps are included, primarily on the exterior side of a seal, one side being coated with the modified low friction coating on a counterface and the other side with a hydrophobic or omniphobic material on a seal body. The material can be in the form of a coating, film, strip, or ring depending on application, and be coated, glued, fused, mechanically attached or by any other suitable method, attached to the seal body. The gap should preferably be in the order of 0.2 to 1 mm wide, thus creating ‘reverse-capillary’ function where water cannot pass all the way through the gap. 1. A seal assembly comprising:a seal body having at least one seal lip;a counterface; whereinthe at least one seal lip is in contact with the counterface covering a contact area on the counterface, and whereinthe counterface is coated with a chemically modified low friction coating, the chemical modification making the coating hydrophobic, and in that the coating of the counterface, when in use, extend on both sides of the contact area, thereby creating a hydrophobic barrier close to the at least one seal lip.2. The seal assembly according to claim 1 , wherein the low friction coating is a polyurethane low friction coating and is chemically modified with a low surface tension silicone modified polyacrylate monomer units with mono-hydroxyl functionality to allow the additive to bond into the polyurethane to thereby create the hydrophobic chemically modified low friction coating.3. The seal assembly according to claim 1 , wherein the seal body extends in part towards the counterface that is coated claim 1 , to thereby create a gap between the extended part of the seal body and a part of the coated counterface.4. The seal assembly according to claim 3 , wherein the part of the seal body that creates a gap with the ...

HYDRAULIC HAMMER HAVING SINGLE PIECE SEAL ASSEMBLY

A seal assembly for a hydraulic hammer is disclosed. The seal assembly may include a seal carrier having at least one annular recess. The seal assembly may also include at least one seal integrally molded onto surfaces of the at least one annular recess. 1. A seal assembly for a hydraulic hammer , the seal assembly comprising;a seal carrier having at least one annular recess; andat least one seal integrally molded onto surfaces of the at least one annular recess.2. The seal assembly of claim 1 , wherein the seal carrier is fabricated from a non-metallic material.3. The seal assembly of claim 1 , wherein the at least one seal includes:a first seal integrally molded onto surfaces of a first inner annular recess of the seal carrier; anda second seal integrally molded onto surfaces of a second inner annular recess of the seal carrier, the second inner annular recess being positioned gravitationally lower than the first inner annular recess.4. The seal assembly of claim 3 , wherein the first and second seals are fabricated from at least one of a rubber material or a polyurethane material.5. The seal assembly of claim 3 , wherein the first and second seals are unidirectional seals.6. The seal assembly of claim 5 , wherein:the first seal includes a U-shaped portion oriented generally upwards with respect to gravity; andthe second seal includes a U-shaped portion oriented generally downwards with respect to gravity.7. The seal assembly of claim 3 , further including:a third seal integrally molded onto surfaces of a third inner annular recess of the seal carrier, the third inner annular recess being positioned gravitationally lower than both the first and second inner annular recesses; anda fourth seal integrally molded onto the third seal.8. The seal assembly of claim 7 , wherein the third seal is fabricated from at least one of a rubber material or a polyurethane material claim 7 , and the fourth seal is fabricated from a nylon material.9. The seal assembly of claim 7 , ...

Sealing device

A sealing device provides sealing so as to prevent a sealed fluid in a machine inner side from leaking to a machine outer side between a housing and a rotating shaft which is inserted to a shaft hole provided in the housing. The sealing device has a seal flange which is installed to an outer periphery of the rotating shaft, and a seal lip which is installed to an inner periphery of the shaft hole of the housing and slidably comes into contact with the seal flange over an entire periphery. The sealing device includes a thread groove which exerts a fluid pumping action when the rotating shaft rotates. The thread groove is provided at a position which does not intersect a contact area where the seal lip slidably comes into contact with the seal flange over the entire periphery, thereby suppressing generation of static leakage.

SHAFT SEAL ASSEMBLY WITH EXCLUSION PUMP DUST LIP

A shaft seal assembly including an elastomeric material molded to an annular metal shell is provided. The elastomeric material includes a lip extending from the annular shell to a lip distal end. The lip includes a first lip section projecting toward a center axis, and a second lip section projecting from the first lip section away from the center axis. A dust band is disposed between the first and second lip sections. The elastomeric material also includes flutes disposed on the second lip section and extending helically around the center axis and radially toward the center axis. The dust band can include vents, in which case one of the flutes extends from one side of each vent. The height of the flutes can increase from the dust band to the flute distal end, such that the flutes and the dust band have an equal interior diameter for engaging the shaft. 1. A dynamic shaft seal assembly , comprising:an annular shell extending circumferentially around a center axis;an elastomeric material attached to said annular shell and extending circumferentially around said center axis;said elastomeric material including a lip extending from said annular shell to a lip distal end,said lip including a first lip section projecting toward said center axis at an angle relative to a plane extending perpendicular to said center axis;said lip including a second lip section projecting from said first lip section away from said center axis at an angle relative to the plane extending perpendicular to said center axis;said lip including a dust band disposed between said first lip section and said second lip section and extending circumferential around said center axis and radially toward said center axis for engaging the shaft; andsaid lip including a plurality of flutes disposed on said second lip section and extending radially toward said center axis for engaging the shaft; andeach of said flutes extending from said dust band helically along said second lip section toward said lip distal ...

SEALING DEVICE

A sealing device between a shaft hole formed on a housing and a rotary shaft, is provided with a rotating seal member fixed to the rotary shaft that rotates integrally with the rotary shaft, and a fixed seal member fixed to an inner surface of the shaft hole. The fixed seal member has a lip contacting the rotary shaft and an axial dust lip contacting the rotating seal member. The rotating seal member is formed by a rigid body, and an opening is formed on the rotating seal member connecting to a space defined by the rotary shaft, the lip and the axial dust lip of the fixed seal member, and the rotating seal member. A deformation member is disposed on the opening of the rotating seal member that has higher elasticity than the rotating seal member, which blocks the opening, and deforms based on the pressure in the space. 1. A sealing device that seals between a shaft hole formed on a housing and a rotary shaft , comprising:a rotating seal member fixed to the rotary shaft that rotates integrally with the rotary shaft, and a fixed seal member fixed to an inner surface of the shaft hole;wherein the fixed seal member has a lip contacting the rotary shaft, and an axial dust lip contacting the rotating seal member;the rotating seal member is formed by a rigid body;an opening is formed on the rotating seal member connecting to a space defined by the rotary shaft, the lip and the axial dust lip of the fixed seal member, and the rotating seal member; anda deformation member is disposed on the opening of the rotating seal member that has higher elasticity than the rotating seal member, which blocks the opening, and deforms based on the pressure in the space.2. The sealing device according to claim 1 , wherein the opening is formed on a position not blocked by the rotary shaft.3. The sealing device according claim 1 , wherein the rotating seal member has an inner side tube portion fixed to the rotary shaft claim 1 , an outer side tube portion disposed on an outer side of the ...

Radial Shaft Seal

The invention relates to a radial shaft seal for sealing a shaft ( 2 ), which is guided through a housing wall opening ( 3 ). The seal comprises at least one first membrane-like, annular sealing element ( 15 ) with a sealing lip ( 22 ) which can be positioned against the shaft ( 2 ) in a sealing manner; a metallic, annular supporting element ( 16 ), onto which the sealing element ( 15 ) is pulled; and a centring surface ( 19 ) formed at the outer circumference of the edge area ( 18 ). In order to increase the lifespan of the seal, said seal can be surrounded by an adapter part ( 6 ) made from undulating curved sheet metal, which can be inserted flush into the housing wall opening ( 3 ). The adapter part ( 6 ) has a central, cylindrical opening ( 8 ) which is provided with a shoulder ( 11 ) at the rear end thereof in the compression direction. The centring surface ( 19 ) of the supporting body ( 16 ) has an allowance for the cylindrical opening ( 8 ) of the adapter part ( 6 ), and is pushed into said opening in a press-fitting manner. A second membrane-like sealing element ( 17 ), which can be firmly pressed between the shoulder ( 11 ) and the supporting body ( 16 ), is arranged between the supporting body ( 16 ) and the shoulder ( 11 ) provided in the opening ( 8 ) of the adapter part ( 6 ).

Seal assembly including connecting channel

A seal assembly for sealing a shaft bearing includes a seal housing, first and second seal rings retained by the seal housing, an annular chamber formed between the first and second seal rings and a connecting channel configured to place the annular chamber in fluid communication with a bearing-housing-side oil space. When the seal assembly is installed on a shaft, the connecting channel is configured to permit a fill-level equalization between the oil space and the annular chamber when the oil space is filled to a first possible fill level (N 1 ) and to prevent the fill-level equalization between oil space and annular chamber when the oil space is filled to a second possible fill level (N 2 ).

LOW-FRICTION SEALING ASSEMBLY FOR A WHEEL-HUB UNIT AND WHEEL-HUB UNIT EQUIPPED WITH SUCH A SEALING ASSEMBLY

Low-friction sealing assembly for a vehicle wheel-hub unit inserted inside an annular interspace defined between a flanged rotating element and a stationary element, coaxial with each other, of the wheel-hub unit to protect at least one ring of revolving bodies arranged between the stationary element and the rotating element, and having a first annular screen and a second annular screen during use integral with the rotating element and with the stationary element; and an annular seal having lips that extend axially and radially projecting from the first screen towards the second screen inside an annular chamber defined by the first and second screens; the sealing assembly being a multi-stage sealing assembly provided with a first inner collecting stage designed to collect and expel some of the contaminants. 1. A low-friction sealing assembly for a vehicle wheel-hub unit that is inserted inside an annular interspace defined between a flanged rotating element and stationary element , coaxial with each other , the wheel-hub unit to protect at least one ring of revolving members arranged between the stationary element and the rotating element , and comprises:a first annular screen integral with the rotating element;a second annular screen integral with the stationary element; andan annular seal comprising lips that extend axially and radially projecting from the first screen towards the second screen inside an annular chamber defined by the first and second screens;the sealing assembly providing a multi-stage sealing assembly and comprises:a first inner collecting stage designed to collect and expel some of the contaminants and is defined by an annular cavity of the first screen; anda labyrinth stage that is arranged radially on the outside of the first inner collecting stage along an entry/exit path of the contaminants and is also defined by an annular deviating lug of the first screen.2. The low-friction sealing assembly according to claim 1 , further comprising an ...

Sealing rubber composition and seal member

A sealing rubber composition includes acrylic rubber, artificial graphite, and coupling agent.

FLEXIBLE SEAL FOR A ROTARY REGENERATIVE PREHEATER

A seal assembly includes a leaf assembly and a supplemental leaf assembly. The leaf assembly includes a first leaf having a first base section. The first base section defines a first fastening area for securing the first leaf to a diaphragm of the preheater. The first leaf has a first elongate section extending away from the first base section and terminating at a first distal end thereof. The leaf assembly further includes a second leaf that engages a portion of the first leaf. The second leaf has a second base section. The second base section defines a second fastening area for securing the second leaf to the diaphragm. The second leaf has a second elongate section extending away from the second base section and terminating at a second distal end thereof. The supplemental leaf assembly is secured to the first leaf and slidingly engaging the second leaf. 1. A seal assembly for a rotary preheater , the seal assembly comprising: a first leaf having a first base section, the first base section defining a first fastening area for securing the first leaf to a diaphragm of the preheater, the first leaf having a first elongate section extending away from the first base section and terminating at a first distal end thereof;', 'a second leaf engaging a portion of the first leaf and having a second base section, the second base section defining a second fastening area for securing the second leaf to the diaphragm, the second leaf having a second elongate section extending away from the second base section and terminating at a second distal end thereof; and', 'a supplemental leaf assembly secured to the first leaf and slidingly engaging the second leaf., 'a leaf assembly comprising2. The seal assembly of claim 1 , wherein the second distal end terminates between the first distal end and the first base section.3. The seal assembly of claim 1 , wherein the supplemental leaf assembly comprises a spacer secured to the first leaf and a third leaf secured to the spacer claim 1 , ...

SEAL ARRANGEMENT IN A VESSEL

The arrangement comprises a seal () sealing a cylindrical rotating part () passing through an opening in a support structure in the vessel () against a medium (W). The seal () comprises a package of annular seal rings (). Each seal ring () comprises a seal part () being supported in a corresponding seal support part (). The seal support part () in the first seal ring () positioned closest to the medium (W) has the form of a cylinder (A) provided with an annular flange (B) at one end of the cylinder (A). The outer surface of the cylinder (A) is supported and sealed with an auxiliary seal () against the inner circumference of the opening. The annular flange (B) is supported against the support structure () surrounding the opening. There are adjusting means () for adjusting the position of the first seal support part () in relation to the support structure () surrounding the opening in order to relocate the seal () in an axial direction in relation to the rotating part (). 11050031100123383710105005105205305405105205305405125225325425115215315415115105115115115116101251133837101283090051133837101250031100. Seal arrangement in a vessel () , said seal arrangement comprising a seal () sealing a cylindrical rotating part ( , ) passing through an opening (O , O) in a support structure ( , , ) in the vessel () against a medium (W) , said seal () comprising a package of annular seal rings ( , , , ) , each seal ring ( , , , ) comprising a seal part ( , , , ) being supported in a corresponding seal support part ( , , , ) , characterized in that the seal support part () in the first seal ring () positioned closest to the medium (W) has the form of a cylinder (A) provided with an annular flange (B) at one end of the cylinder (A) , whereby the outer circumference of the cylinder (A) is supported and sealed with an auxiliary seal () against the inner circumference of the opening (O , O) and the annular flange (B) is supported against the support structure ( , , ) surrounding the ...

RESILIENT SHAFT SEAL

A seal assembly configured to be mounted between a rotatable shaft and a housing has a first side and a second side axially spaced from the first side and includes an annular seal support having a first end at the first side of the seal assembly and a second end spaced axially from the first end, at least one seal body configured to form a seal between the shaft and the seal support, the at least one seal body contacting the seal support at a joint, and a resilient annular body mounted between the seal support and the housing. All portions of the resilient annular body are located radially outward of the joint. 1. A seal assembly configured to be mounted between a rotatable shaft and a housing , the seal assembly having a first side and a second side axially spaced from the first side , the seal assembly comprising:an annular seal support having a first end at the first side of the seal assembly and a second end spaced axially from the first end;at least one seal body configured to form a seal between the shaft and the seal support, the at least one seal body contacting the seal support at a joint; anda resilient annular body mounted between the seal support and the housing,wherein all portions of the resilient annular body are located radially outward of the joint.2. The seal assembly according to claim 1 , wherein the resilient annular body has an axially facing channel open toward the first side of the seal assembly.3. The seal assembly according to claim 2 , wherein the first end of the seal support includes a radial flange projecting away from the shaft and wherein a first portion of the resilient annular body abuts against the flange of the seal support.4. The seal assembly according to claim 3 , wherein the housing includes a radial side flange at the first side of the seal assembly projecting toward the shaft and wherein a second portion of the resilient annular body abuts against the side flange of the housing.5. The seal assembly according to claim 4 , ...

BUFFER RING

A buffer ring includes an annular body portion that makes close contact with a side wall face of an annular groove ; an inner peripheral lip that extends toward a sealed fluid side O from an inner peripheral end portion of the body portion ; and an outer peripheral lip that extends toward the sealed fluid side O from an outer peripheral end portion of the body portion and having an outer peripheral end portion making close contact with a groove bottom face of the annular groove , the outer peripheral lip being lower in stiffness than the inner peripheral lip , wherein a plurality of protrusions that make close contact with the groove bottom face of the annular groove are provided on an outer peripheral face of the body portion at intervals in a circumferential direction. 1a shaft;a housing;a buffer ring to buffer a pressure of a sealed fluid against a packing that seals an annular gap between the shaft and the housing reciprocating relative to each other, the buffer ring being fixed on a sealed fluid side of the packing and in an annular groove provided on an inner periphery of the housing, the buffer ring including:an annular body portion that makes close contact with a side wall face of the annular groove;an inner peripheral lip that extends axially from the annular body portion and toward a sealed fluid side from an inner peripheral end portion of the body portion, the inner peripheral lip including an inner peripheral end portion, the inner peripheral end portion of the inner peripheral lip being slidable relative to an outer peripheral face of the shaft; andan outer peripheral lip that extends axially from the annular body portion and toward the sealed fluid side and an outer peripheral side so as to be inclined from an outer peripheral end portion of the body portion, the outer peripheral lip including an outer peripheral end portion, the outer peripheral end portion of the outer peripheral lip making close contact with a groove bottom face of the annular ...

SEALING APPARATUS

A sealing apparatus sealing a gap between two members mutually relatively rotatable about an axis in an internal combustion engine, the sealing apparatus comprises an elastic body portion. The elastic body portion is an elastic body including an annular attaching portion attached to one of the two members and centered about the axis, and a seal portion in close contact with another of the two members in a manner in which the other of the two members is slidable. The seal portion includes an annular seal lip portion centered about the axis and an annular dust lip centered about the axis on an atmospheric side on an opposite side of a sealed fluid side with respect to the seal lip portion. The seal lip portion includes a lip tip portion which is an annular projecting body projecting toward the axis and grease is applied to the seal lip portion. The grease contains at least one of a synthetic hydrocarbon oil and a mineral oil as a base oil and has a low temperature starting torque of 25 N·cm or less at −30° C. 1. A sealing apparatus sealing a gap between two members mutually relatively rotatable about an axis in an internal combustion engine , the sealing apparatus comprising:an elastic body portion which is an elastic body including an annular attaching portion attached to one of the two members and centered about the axis; and a seal portion in close contact with another of the two members in a manner in which the other of the two members is slidable, whereinthe seal portion comprises: an annular seal lip portion centered about the axis; and an annular dust lip centered about the axis on an atmospheric side on an opposite side of a sealed fluid side with respect to the seal lip portion, whereinthe seal lip portion comprises a lip tip portion which is an annular projecting body projecting toward the axis, andgrease is applied to the seal lip portion, the grease contains at least one of a synthetic hydrocarbon oil and a mineral oil as a base oil and has a low ...

SEALING STRUCTURE OF PLUNGER PUMP

A sealing structure of plunger pump, comprising a pump body, a feed chamber, an oil, a suited plunger; wherein the plunger includes a one-way valve and a discharge hole; the feed chamber includes a mounting step having a first sealing ring, a second sealing ring; an inner wall of the first sealing ring has a plurality of first sealing pipes distributed uniformly in longitudinal direction; an infusion step having an annular mounting groove; the mounting groove is embedded with a suited spring leaf; an inner wall of the second sealing ring includes a plurality of sealing toothed rings. The sealing structure of the plunger pump can ensure the sealing effect of the sealing ring when the sealing ring is worn out, and can ensure the service life of the sealing ring to the utmost extent. 1. A sealing structure of plunger pump , comprising:a pump body, a feed chamber located in the pump body and an oil line connected to the feed chamber; a suited plunger is located in the feed chamber;wherein the plunger includes a one-way valve and a discharge hole matching the one-way valve; the one-way valve is located near the connection between the feed chamber and the of line; an upper inner wall of the feed chamber includes a mounting step; the mounting step includes a first sealing ring, the first sealing ring is fitted over the plunger; a second sealing ring is disposed above the first sealing ring and the second sealing ring is sleeved outside the plunger; an inner wall of the first sealing ring has a plurality of first sealing pipes distributed uniformly in longitudinal direction; the first sealing pipes are integrally formed with the first sealing ring; the first sealing pipes are wide-top narrow-bottom hole shaped; the first sealing pipes and the inner wall of the first sealing ring are enclosed to form a plurality of first storage tanks distributed uniformly in longitudinal direction; an infusion step is located on a lower surface of the second sealing ring corresponding to ...

SEAL DEVICE AND SEAL ASSEMBLY

The invention relates to a seal device () for sealing two bearing elements which rotate relative to each other about an axis (D), in particular for sealing a rolling bearing. The seal device () includes a sealing section () for sealing purposes and a fastening section () for holding the seal device () against a bearing element (). The sealing section () is arranged at one end of the fastening section () and includes a free end (E) opposite thereof. All the sections () have a common carrier element () and at least one sealing element (), and all the sections () extend in the radial direction (R) and/or in the axial direction (A). The fastening section () extends at least partly in the axial direction (A) such that the carrier element () and the sealing element () rest directly against a bearing element () in order to form a clamping seat in the radial direction (R) by the carrier element () in order to hold against a bearing element () and a static seal by the seal element () in order to seal against a bearing element (). The invention further relates to a seal assembly () for a rolling bearing, in particular for a wheel bearing assembly, including a bearing element () and a seal device (). 1. A seal device for sealing two bearing elements that rotate relative to each other about an axis , the seal device comprises:a sealing section for sealing, anda fastening section configured to hold the seal device on one of the bearing elements,the sealing section is arranged on a first end of the fastening section and comprises a free end opposite the first end,the sealing section and the fastening section have a common carrier element and at least one sealing element,the sealing section and the fastening section extend in at least one of a radial direction or an axial direction,the fastening section extends at least partially in the axial direction and is configured for direct contacting of the carrier element and the sealing element on the bearing element, in order to form a ...

Sealing Device in Particular for Shock-Absorber Stems

Sealing device including a first seal and a second seal each having an annular support formed in the manner of a sleeve and delimited by a first and second face which are situated opposite each other and a first and second annular sealing elements; wherein the first and second annular sealing elements are independent and separate from each other and are fixed integral with a first portion and a second portion of the annular support which are different from each other and are made of a first and second elastomer mix, the second elastomer mix being different from the first mix and having a greater hardness and higher elastic modulus; at least one annular sealing element being provided radially on the inside with at least one annular lip which extends radially and axially in cantilever fashion from a first end of the annular support.

ROTARY HYDRAULIC ACTUATOR SEAL

A sealing assembly includes an elastomer seal having an inner surface and a polymer cap bonded to the inner surface of the elastomer seal and having a dynamic sealing surface. The polymer cap is configured to form a continuous fluid-tight seal against a curved element when pressurized. 1. A sealing assembly , comprising:an elastomer seal having an inner surface; anda polymer cap bonded to said inner surface of said elastomer seal and having a dynamic sealing surface, said polymer cap being configured to form a continuous fluid-tight seal against a curved element when said polymer cap is pressurized.2. The sealing assembly according to claim 1 , wherein at least one of said elastomer seal and said polymer cap defines a substantially oval shape.3. The sealing assembly according to claim 2 , wherein said elastomer seal and said polymer cap both define a substantially oval shape.4. The sealing assembly according to claim 1 , wherein said elastomer seal includes a first seal portion connected to a second seal portion claim 1 , said first seal portion defining a first seal cross-sectional shape and said second seal portion defining a second seal cross-sectional shape that is different than said first seal cross-sectional shape.5. The sealing assembly according to claim 4 , wherein said first seal portion includes a first seal outer surface and said second seal portion includes a second seal outer surface claim 4 , said first seal outer surface being continuous with said second seal outer surface claim 4 , said first seal outer surface having a different shape than said second seal outer surface.6. The sealing assembly according to claim 4 , wherein at least one of said first seal portion and said second seal portion has a groove formed therein.7. The sealing assembly according to claim 4 , wherein at least one of said first seal portion and said second seal portion includes at least one rounded corner.8. The sealing assembly according to claim 7 , wherein said at least ...

LINEAR ENCODER WITH IMPROVED SEALING

A sealed linear encoder includes a housing adapted for attachment to a first object and a scale unit and scanning unit arranged in a hollow body of the housing, which has a slot extending in a direction of measurement. The scanning unit is mounted on a first end of a pedestal slidably accommodated within the slot and whose second end is adapted for attachment to a second object. The slot is sealed by first and second pairs of sealing lips, which together with the pedestal are configured such that the pedestal intersects the first and second pairs of sealing lips at respective locations that are axially displaced along the direction of measurement such that there is no axial overlap between the first and second pairs of sealing lips at these locations. 1. A sealed linear encoder for determining the relative position of a first object and a second object , comprising:a housing adapted for attachment to the first object;a scale unit arranged in a hollow body of the housing having a slot which extends in a direction of measurement;a scanning unit for scanning the scale unit and being mounted on a first end of a pedestal that is slidably accommodated within said slot and whose second end is adapted for attachment to the second object;a first pair of sealing lips arranged for sealing opposite edges of the slot; anda second pair of sealing lips arranged for sealing opposite edges of the slot, said second pair of sealing lips being displaced from the first pair of sealing lips in a direction normal to the direction of measurement;the pedestal and sealing lips being configured such that the pedestal intersects the first and second pairs of sealing lips at respective locations that are axially displaced along the direction of measurement whereby there is no axial overlap between the first and second pairs of sealing lips at said locations;{'sub': 1', '2, 'wherein the pedestal comprises two laterally spaced supports of respective widths hand hthat are interconnected by a ...

Sealing device

A sealing device includes: resin packing 100 having an outer peripheral lip 120 , an inner peripheral lip 130 and an annular mounting groove 110 , the mounting groove 110 being provided on a sealed-region side (H) of the packing 100 , the outer peripheral lip 120 being located on a radially outward side of the packing 100 with respect to the mounting groove 110 , and the inner peripheral lip 130 being located on a radially inward side of the packing 100 with respect to the mounting groove 110 ; and a spring 200 having an outer peripheral portion 210 that presses the outer peripheral lip 120 radially outwardly and an inner peripheral portion 220 that presses the inner peripheral lip 130 radially inwardly, the spring 200 being mounted in the mounting groove 110 , wherein the inner peripheral lip 130 has an first annular groove 111 in its outer peripheral surface, the first annular groove 111 being formed adjacent to a groove bottom of the mounting groove 110.

SEAL ASSEMBLY FOR SUPERCRITICAL FLUID CHROMATOGRAPHY

A seal assembly for pressurized fluid applications, including supercritical fluid chromatography applications, includes an annular body and a helical wound flat spring. A bore extends through the annular body. The annular body has an outer lip and an inner lip opposed to and spaced apart from each other. The inner lip, outer lip and an overhanging lip portion of the outer lip define a pocket in which the helical wound flat spring is disposed. A load line of the helical wound flat spring is directed substantially along a direction of separation between the inner and outer lips to bias apart the lips. Embodiments of the seal assembly have an improved distribution of contact pressure between the inside diameter of the seal assembly and the plunger with which the inside diameter seals, and between the outside diameter of the seal assembly and a gland surface with which the outside diameter seals. 1. A seal assembly comprising:an annular body having a bore extending therethrough, the annular body having an inner lip opposed to and spaced apart from an outer lip, the outer lip having an overhanging lip portion, the inner and outer lips and the overhanging lip portion together defining a pocket; anda helical wound flat spring disposed in the pocket such that a load line of the helical wound flat spring is directed substantially along a direction of separation between the inner and outer lips to thereby bias apart the inner and outer lips.2. The seal assembly of wherein the helical wound flat spring has a plurality of loops and is formed of a flat ribbon having a width that is greater than a gap width between adjacent loops in the plurality of loops.3. The seal assembly of wherein the helical wound flat spring is formed from a stainless steel flat ribbon.4. The seal assembly of claim 1 , further comprising a backup ring in contact with the annular body claim 1 , the contact ring having a bore in coaxial alignment with the bore of the annular body and configured to receive a ...

ARRANGEMENT STRUCTURE FOR SEAL MEMBER

An arrangement structure for a seal member includes: a first member having a first mating surface and provided with a groove portion; a second member having a second mating surface, and configured to move relatively to the first member; and an annular seal member fitted into the groove portion, providing sealing between the first member and the second member, and serving as a partition between an atmosphere-side space and a pressurized-side space. The seal member includes a plurality of first protruding portions protruding toward the second mating surface and aligned from the atmosphere-side space toward the pressurized-side space. The seal member has such a shape that, in a state of not being fitted into the groove portion, a protrusion height of the first protruding portion increases in stages from the first protruding portion arranged close to the pressurized-side space toward the first protruding portion arranged close to the atmosphere-side space. 1. An arrangement structure for a seal member , comprising:a first member having a first mating surface and provided with a groove portion, the groove portion being recessed from the first mating surface and extending annularly;a second member having a second mating surface facing the first mating surface, and configured to move relatively to the first member; andan annular seal member fitted into the groove portion, providing sealing between the first member and the second member, and serving as a partition between a first space and a second space having a pressure higher than that of the first space,the seal member including a plurality of first protruding portions protruding toward the second mating surface and aligned from the first space toward the second space,the seal member having such a shape that, in a state of not being fitted into the groove portion, a protrusion height of the first protruding portion increases in stages from the first protruding portion arranged close to the second space toward the first ...

SEALING DEVICE

A sealing device includes a reinforcing ring and an elastic body part. The elastic body part includes an annular seal lip, an annular dust lip, and an annular side lip that extends toward an outer side on an outer periphery side of the dust lip. The side lip includes an annular middle portion that increases in diameter as progress toward the outer side and an annular distal end portion that is a portion connected to and on the outer side of the middle portion and that increases in diameter as progress toward the outer side. In the side lip, the distal end portion is bent to an inner periphery side from the middle portion. In the middle portion, at least one groove is formed annularly around an axis x. 1. A sealing device for sealing between a through-hole and a shaft inserted through the through-hole , the sealing device comprising:a reinforcing ring formed annularly around an axis; and an annular seal lip, the seal lip being in contact with the shaft such that the shaft is slidable;', 'an annular dust lip, the dust lip being provided on an outer side of the seal lip and extending toward the axis; and', 'an annular side lip, the side lip extending toward the outer side on an outer periphery side of the dust lip, the side lip having:', 'an annular middle portion, the middle portion increasing in diameter as progress toward the outer side in a direction of the axis; and', 'an annular distal end portion, the distal end portion being a portion connected to and on the outer side of the middle portion, the distal end portion increasing in diameter as progress toward the outer side in the direction of the axis,, 'an elastic body part formed from an elastic body that is attached to the reinforcing ring and that is formed annularly around the axis, the elastic body part includingwherein in the side lip, the distal end portion is bent to an inner periphery side from the middle portion, andwherein in the middle portion, at least one groove is formed annularly around the axis.2 ...

Joint for Device for Metering Liquids

The present invention relates to a device for metering liquids, for example a pipette or a metering button. The device comprises a joint forming a seal between a hollow cylinder and a piston housed inside the cylinder, the piston being moved vertically so as to suck in or expel the liquid. During the metering operation, the joint remains fixed with respect to the movement of the piston and comprises parts formed by portions having dedicated geometric and mechanical characteristics which make it possible to locally optimize the functions the sliding, sealing, and fastening in the cylinder.

SEALING DEVICE

The present invention relates to a sealing device () comprising a sealing circular piece (), an inner ring () and an outer ring (), one of the two rings being able to rotate relative to an axis, the circular piece () being arranged between the two rings () and comprising two circular lips () arranged in a groove () at right angles to the axis of rotation, a top lip () and a bottom lip () substantially at right angles to the top lip (), said bottom lip () has a radius of curvature directed towards the interior, the groove () being provided on the outer face () of the inner ring () and a third circular lip () pressing on the outer face () of the inner ring (), and a part () is fixed in an orifice () formed in the outer ring (). 1. Sealing device comprising at least one sealing circular piece , an inner ring and an outer ring , one of the two rings being able to rotate relative to an axis , the circular piece being arranged between the two rings , wherein the circular piece comprises two circular lips arranged in a groove at right angles to the rotation axis , provided on the face of one of the rings , a top lip and a bottom lip substantially at right angles to the top lip , said bottom lip has a radius of curvature directed towards the interior and a third circular lip pressing on said face of the ring , and a fixing profile is fixed in a groove formed in the other outer ring.2. Sealing device according to claim 1 , wherein the third lip is placed above the other two lips.3. Sealing device according to claim 1 , wherein the groove has two parallel flanks.4. Sealing device according to claim 1 , wherein the fixing profile is a fir tree profile.5. Sealing device according to claim 1 , wherein the first lip presses on the side of the groove.6. Sealing device according to claim 5 , wherein the second lip presses on the side of the groove.7. Sealing device according to claim 1 , wherein the sealing circular piece comprises an edge pressing on an inner face of the ring.8. ...

Lip Seal

A seal includes an annular body defining a radial direction, an axial direction, and a circumferential direction; and further defines a cross-sectional area including a perimeter. The perimeter may comprise a first axial extremity, a second axial extremity, an outer radial extremity, and an inner radial extremity. The perimeter may include a first axial extremity defining surface and a second axial extremity defining surface, a first concave arcuate surface interposed between the inner radial extremity and the second axial extremity, and a second concave arcuate surface interposed between the outer radial extremity and the second axial extremity.

Lip Seal

A seal according to an embodiment of the present disclosure comprises an annular body defining a radial direction, an axial direction, and a circumferential direction; and further defining a cross-sectional area including a perimeter. The perimeter may comprise a first axial extremity, a second axial extremity, an outer radial extremity, and an inner radial extremity. The perimeter includes a first axially extending surface defining the outer radial extremity and an inner radial convex arcuate surface defining the inner radial extremity.

ELECTRICALLY GROUNDING CASSETTE SEAL

A cassette seal is configured to seal a shaft within a housing. A shaft casing is annularly-shaped about a longitudinal axis and is configured to fixedly attach to the shaft, where the shaft casing is electrically conductive and configured to be in electrical conductivity with the shaft when attached to the shaft. A housing casing is annularly-shaped about the longitudinal axis and is configured to fixedly attach to the housing, where the housing casing is electrically conductive and configured to be in electrical conductivity with the housing when attached to the housing. A seal is disposed between the shaft and housing casing. At least one cantilevered flexural finger is attached fixedly attached to either the shaft casing or the housing casing and then in rotating abutment with the other. The at least one cantilevered flexural finger is electrically conductive and electrically connects the shaft casing to the housing casing. 1. A cassette seal for sealing a shaft within a housing , where either the shaft rotates relative to the housing or the housing rotates relative to the shaft about a longitudinal axis , the cassette seal mutually defining and annularly-shaped about the longitudinal axis , the cassette seal comprising:a shaft casing annularly-shaped about the longitudinal axis configured to fixedly attach to the shaft, wherein the shaft casing is electrically conductive and configured to be in electrical conductivity with the shaft when attached to the shaft;a housing casing annularly-shaped about the longitudinal axis configured to fixedly attach to the housing, wherein the housing casing is electrically conductive and configured to be in electrical conductivity with the housing when attached to the housing;at least one seal disposed between the shaft casing and the housing casing, the at least one seal fixedly attached to either the shaft casing or the housing casing and then in rotating abutment with the other, the at least one seal configured to separate ...

METHOD FOR MANUFACTURING SEALING DEVICE, AND SEALING DEVICE

[Problem] To provide a method for manufacturing a sealing device having high pressure-resistance and high durability. 1. A method for manufacturing a sealing device to be provided between a shafta step for forming an atmosphere-side rigid ring by forming a through-hole in a rigid body by a punching-out process,a step for causing a reinforcement ring for reinforcing an elastic ring to contact the elastic ring in a direction parallel to the axial direction of the shaft, wherein the elastic ring is made of an elastic body, is attached to a liquid-side rigid ring made of a rigid body and provided inside the shaft hole, is provided radially inward of the liquid-side rigid ring and has formed thereon a seal lip that slidably makes sealing contact with the shaft, anda step for causing the atmosphere-side rigid ring to contact the reinforcement ring in a direction parallel to the axial direction of the shaft so that a surface contacted by an end surface of a punch during the punching-out process of the atmosphere-side rigid ring is positioned on an opposite side to the reinforcement ring.2. A sealing device to be provided between a shaft and an inner surface of a shaft hole in which the shaft is provided , the sealing device comprisinga liquid-side rigid ring made of a rigid body and provided inside the shaft hole,an elastic ring which is made of an elastic body, is attached to the liquid-side rigid ring, is provided radially inward of the liquid-side rigid ring, and has formed thereon a seal lip that slidably makes sealing contact with the shaft,a reinforcement ring which contacts the elastic ring in a direction parallel to the axial direction of the shaft and reinforces the elastic ring, andan atmosphere-side rigid ring which is made of a rigid body, contacts the reinforcement ring in a direction parallel to the axial direction of the shaft, and reinforces the reinforcement ring,wherein the maximum diameter of an inclined surface of a corner portion on the reinforcement ...

Piston-integrated seal

A piston-integrated seal has a seal lip integrally provided in a clutch piston of a hydraulic clutch and directed to a hydraulic chamber side. In the seal lip, a main seal edge portion in a hydraulic chamber side and a sub seal edge portion in an anti-hydraulic chamber side are formed in a sliding portion in relation to the other sliding surface. In the main seal edge portion and the sub seal edge portion, an angle of an inclined surface in the hydraulic chamber side is smaller than an angle of an inclined surface in the anti-hydraulic chamber side in a un-installed state, and the angle of the inclined surface in the hydraulic chamber side in relation to the other sliding surface is approximately equal to the angle of the inclined surface in the anti-hydraulic chamber side in an installed state, thereby reducing friction difference in a sliding direction.

Protective Labyrinth Over Mast Seal to Protect From Water Intrusion

The present invention includes a helicopter rotor seal assembly comprising: a rotor mast having a longitudinal axis and an outer surface; a sleeve aligned longitudinally with the axis and surrounding a portion of the rotor mast, the sleeve having an outer surface, and an inner surface; an annular horizontal seal between the inner surface of the sleeve and the outer surface of the rotor mast; and an upper annular rotor mast seal affixed to the outer surface of the rotor mast and extending outwardly sufficient to cover the annular horizontal seal. 1. A helicopter rotor seal assembly comprising:a rotor mast having a longitudinal axis and an outer surface;a sleeve aligned longitudinally with the axis and surrounding a portion of the rotor mast, the sleeve having an outer surface, and an inner surface;an annular horizontal seal between the inner surface of the sleeve and the outer surface of the rotor mast; andan upper annular rotor mast seal affixed to the outer surface of the rotor mast and extending outwardly sufficient to cover the annular horizontal seal.2. The seal assembly of claim 1 , wherein the annular horizontal seal comprises a base and one or more tines claim 1 , each of the tines having a spring disposed between the tine and the base and provides substantially fluid-tight connection between the sleeve and the rotor mast.3. The seal assembly of claim 1 , wherein the upper annular rotor mast seal further comprises a vertical portion that covers the sleeve both horizontally and vertically.4. The seal assembly of claim 1 , wherein the upper annular rotor mast seal does not contact the sleeve.5. The seal assembly of claim 1 , wherein the upper annular rotor mast seal comprises a labyrinth seal.6. The seal assembly of claim 1 , wherein the upper annular rotor mast seal is a composite claim 1 , a polymer claim 1 , a rubber claim 1 , a plastic claim 1 , a fiberglass claim 1 , a metal claim 1 , an alloy claim 1 , or combinations thereof.7. The seal assembly of claim ...

DYNAMIC SEALING DEVICE

Disclosed is a dynamic sealing device configured to provide sealing between at least a first part and at least a second part having a relative rotational movement in relation to the first part. The device includes a seal provided with a first lip and with a second lip extending from a body portion, the first lip facing the second lip, the seal being formed from a first predetermined material having a first coefficient of friction, and a ring formed from a second predetermined material different from the first predetermined material and having a second coefficient of friction different from the first coefficient of friction. The ring is securely connected with the seal at the location of the body portion and the first coefficient of friction of the first predetermined material forming the seal is greater than the second coefficient of friction of the second predetermined material forming the ring. 110. A dynamic sealing device () configured to provide sealing between at least a first part and at least a second part having a relative rotational movement in relation to the first part , the device comprising:{'b': 11', '12', '13', '14', '12', '13', '11, 'a seal () provided with a first lip () and with a second lip () extending from a body portion (), the first lip () facing the second lip (), the seal () being formed from a first predetermined material having a first coefficient of friction, and'}{'b': '18', 'a ring () formed from a second predetermined material different from the first predetermined material and having a second coefficient of friction different from the first coefficient of friction;'}{'b': 18', '11', '14', '11', '18, 'wherein the ring () is securely connected with the seal () at the location of the body portion () and wherein the first coefficient of friction of the first predetermined material forming the seal () is greater than the second coefficient of friction of the second predetermined material forming the ring ().'}2. A device according to ...

MIXING DEVICE COMPRISING A SEAL

A mixing device includes a mixing container for receiving mixing material and a mixer cover, wherein a first seal and a second seal is provided between the mixing container and the mixer cover. The first seal and the second seal are so arranged that a first air space is formed between the first seal and the second seal. 1. A mixing device comprising a mixing container for receiving mixing material and a mixer cover , wherein a first seal is provided between the mixing container and the mixer cover , wherein there is a mixer stand and the mixing container is mounted rotatably about an axis of rotation with respect to the mixer stand and the mixing device has a drive with which the mixing container can be rotated about the axis of rotation , wherein the mixer cover is fixed to the mixer stand , characterised in that there is provided a second seal and the first and the second seal are so arranged that a first air space is formed between the first and the second seal.2. The mixing device according to claim 1 , wherein the mixing container is cylindrical and has an edge surface claim 1 , wherein the first seal is in contact with the edge surface claim 1 , wherein preferably also the second seal is in contact with the edge surface.3. The mixing deice according to claim 1 , wherein the first seal seals off the first air space with respect to the interior of the mixing container while the second seal seals off the first air space with respect to the exterior of the mixing container and there is provided a first fluid passage having a first fluid passage opening which is arranged in the first air space claim 1 , by way of which fluid can be fed into the first air space or fluid can be sucked out of the first air space.4. The mixing device according to claim 1 , wherein the first and the second seal are elastic claim 1 , wherein the first and the second seal are so arranged that the first seal is deflected elastically in the direction of the interior of the mixing container ...

Annular seal

A seal assembly capable of low temperature service is disclosed. It features upper and lower metallic backup rings that are specially shaped to act as a spring to keep the sidewalls of such rings in contact with the inside and outside surfaces to be sealed to prevent extrusion of the seal material even in low temperature situations. Inner and outer grooves are provided. O-ring seals, used for the ID of the seal, are manufactured to have a slightly greater diameter than the groove into which they will be installed. The greater length provides stored energy to promote sealing functionality in cold temperature situations. The O-rings used for the OD of the seal are manufactured to have a slightly smaller diameter than the groove into which they will be installed. The shorter length provides stored energy to promote sealing functionality in cold temperature situations.

SHAFT SEAL WITH RETENTION FEATURES AND OVERMOLDED SEAL COMPONENT

A seal component for a shaft seal assembly includes an elastomeric element and a substrate, wherein the seal component has an over-molded configuration in which the elastomeric element is over-molded onto the substrate. In one embodiment, the elastomeric element includes a pair of flexible arms that are compressible about an apex to energize the seal component. In another embodiment, the shaft seal assembly includes twist lock retention features for retaining the seal component within the housing structure. The seal component includes a plurality of locking features, and a plurality of cooperating locking slots is provided in the housing structure that respectively receive the locking features of the seal component. Specifically, when the seal component is rotated relative to the housing structure from an initial position to a second locked position, the locking features are compressed within the locking slots of the housing structure in the second locked position. 1. A seal component for a shaft seal assembly comprising:an elastomeric element; anda substrate;wherein the seal component has an over-molded configuration in which the elastomeric element is over-molded onto the substrate.2. The seal component of claim 1 , wherein:the elastomeric element defines an over-molding recess;the substrate includes an over-molding extension; andin the over-molded configuration, the over-molding recess receives the over-molding extension.3. The seal component of claim 2 , whereinthe elastomeric material includes a pair of flexible arms that are compressible about an apex adjacent the over-molding recess.4. The seal component of claim 3 , wherein at least one of the flexible arms defines a spring recess configured to receive a spring.5. A shaft seal assembly comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the seal component of ;'}a housing structure that receives the seal component; anda cap structure that extends over at least a portion of the housing structure; ...

SEALING DEVICE AND MANUFACTURING METHOD THEREFOR

A sealing device seals a rod having a cylindrical part and a cylindrical guide that guides reciprocation of the rod in an axial direction of the rod. The sealing device includes an elastic ring formed of an elastic material, and a rigid ring formed of a rigid material fixed to the elastic ring for reinforcing the elastic ring. The elastic ring includes a lip with which an outer peripheral surface of the rod is in slidable contact. The rigid ring includes a rigid-ring cylindrical part located radially outside an end portion of the guide. The rigid-ring cylindrical part includes multiple hook hasps engaged into at least one recess formed on an outer peripheral surface of the guide. Each of the multiple hook hasps includes a root portion and a distal end portion located radially inward of the root portion and fitted into the recess. A thin portion is formed at the root portion of the hook hasp, the thin portion being thinner than other parts of the hook hasp. 1. A sealing device for sealing a rod having a cylindrical part and a cylindrical guide that guides reciprocation of the rod in an axial direction of the rod , comprising:an elastic ring formed of an elastic material; anda rigid ring formed of a rigid material fixed to the elastic ring for reinforcing the elastic ring,the elastic ring comprising a lip with which an outer peripheral surface of the rod is in slidable contact,the rigid ring comprising a rigid-ring cylindrical part located radially outside an end portion of the guide,the rigid-ring cylindrical part comprising multiple hook hasps engaged into at least one recess formed on an outer peripheral surface of the guide,each of the multiple hook hasps comprising a root portion and a distal end portion located radially inward of the root portion and fitted into the recess,a thin portion being formed at the root portion of the hook hasp, the thin portion being thinner than other parts of the hook hasp.2. The sealing device according to claim 1 , wherein the thin ...

CORN HEAD ROW UNIT GEARBOX DRIVE SHAFT SEAL

A corn head row unit gearbox includes an input shaft, that rotates about a first axis of rotation and that drives a set of gears. The gears transfer rotation of the input shaft into rotation of a gathering chain output shaft about a second axis of rotation, generally transverse to the first axis of rotation. The gathering chain drive shaft rotates within a bushing mounted within a frame structure of the gearbox. A bushing seal has an annular mounting sleeve with an inner diameter that is press fit over a boss on the frame structure. 1. A row unit gear box seal system , comprising:an annular mounting collar, that has an annular mounting sleeve annularly disposed about an axis and having an inner surface, the inner surface of the annular mounting sleeve having an inner diameter sized for press fit engagement with an outer surface of a boss on a structural frame of a row unit gear box, the annular mounting collar having a connection member extending away from the annular mounting sleeve in an axial direction;a resilient seal member, that is resilient relative to the connection member of the annular mounting collar, fixedly coupled to the connection member and oriented for frictional engagement with a drive shaft that rotates relative to the structural frame; anda wear sleeve that has an overlapping portion that overlaps at least a portion of the resilient seal member in the axial direction, the wear sleeve frictionally engaging the resilient seal member, and being rotatably mounted relative to the resilient seal member, to rotate with the drive shaft.2. The row unit gear box seal system of wherein the resilient seal member comprises:a first annular lip extending radially inward toward the axis and sized for frictional engagement with the drive shaft.3. The row unit gear box seal system of wherein the drive shaft rotates within a bushing mounted to the structural frame of the row unit gear box and wherein the resilient seal member comprises:a second annular lip axially ...

GIMBAL SYSTEM WITH DUAL-WIPER GASKET FOR A ROTARY SEAL

System including a rotary seal created by a dual-wiper gasket. In exemplary embodiments, the system may comprise a mounting portion and a gimbal assembly. The gimbal assembly may include a first gimbal pivotably connected to and supported by the mounting portion for rotation of the first gimbal about a first axis, and a second gimbal pivotably connected to and supported by the first gimbal for rotation of the second gimbal about a second axis transverse to the first axis. The system also may comprise a gasket encircling the first axis and creating a rotary seal between the mounting portion and the first gimbal. The gasket may have an inner wiper encircled by an outer wiper, with both wipers disposed in circumferentially sealed engagement with the mounting portion or the first gimbal. 1. A system comprising:a mounting portion;a first gimbal pivotably connected to and supported by the mounting portion configured to rotate about a first axis; a base attached to at least one of the mounting portion and the first gimbal; and', 'an inner wiper encircled by an outer wiper, wherein each wiper is configured to be projected from the base into circumferentially sealed engagement with a surface of the other of the mounting portion and the first gimbal., 'a gasket configured to encircle the first axis to create a rotary seal between the mounting portion and the first gimbal, wherein the gasket comprises2. The system of claim 1 , wherein a diameter of the inner wiper measured across the first axis decreases as the inner wiper extends away from the base claim 1 , and wherein a diameter of the outer wiper measured across the first axis increases as the outer wiper extends away from the base.3. The system of claim 1 , wherein a separation of the inner wiper and the outer wiper from one another increases as the inner and outer wipers extend away from the base toward the surface of the other of the mounting portion and the first gimbal.4. The system of claim 1 , wherein each wiper is ...

PRESSURE-ACTIVATABLE ROTARY SEAL AND ROTARY SEAL ASSEMBLY

A rotary seal seals a high-pressure region from a low-pressure region and has an assembly sleeve made of a rubber elastic material and at least one pressure-activatable rotary seal element with a seal edge. When a specified differential pressure value is exceeded, the seal edge of the rotary seal element rests sealingly against the seal surface of a machine part, thereby directly displacing a support element elastically supported on the rubber elastic assembly sleeve. When the specified differential pressure value is undershot, the support element is moved rearwards axially in the direction of the high-pressure region such that the seal edge of the rotary seal element is moved backwards into the seal edge rest position in which the rotary seal element lies against the seal surface without contact surface pressure or substantially without contact surface pressure or is arranged at a distance from the seal surface. 1. A rotary seal assembly , comprising:a first machine part and a second machine part rotatable about an axis of rotation relative to the first machine part, wherein one of the two machine parts comprises a seal retaining structure, and the other of the two machine parts comprises a sealing surface, and having a rotary seal arranged on the seal retaining structure of one machine part in order to seal a high-pressure region H from a low-pressure region N of the rotary seal assembly;an installation sleeve made of a rubber-elastic material;at least one pressure-activatable rotary seal element, which has a sealing edge, is arranged in or on the installation sleeve and extends away from the installation sleeve towards the sealing surface;a support body, which rests, on the low-pressure-region side, against a support region of the rubber-elastically deformable installation sleeve and on which the rotary seal element is directly supported on the low-pressure-region side such that the sealing edge is arranged, in a non-pressurized operating state, in an inactive ...

Rotating Seal Mechanism

A rotating seal mechanism, provided between a fixed body and a rotating body, and comprising: a sealing assembly rotatably connected to the rotating body and disposed on a circumference of the rotating body; a flexible connecting body connecting the sealing component and the fixed body; and a circumferential limiting component disposed on the sealing assembly. The rotating seal mechanism compensates for bouncing movement between and sealingly joins the fixed body and the rotating body. 1. A rotating seal mechanism disposed between a fixed body and a rotating body , comprising: a sealing assembly disposed on a circumference of the rotating body and rotatably connected to the rotating body; a flexible connecting body connected with the sealing assembly and the fixed body; and a circumferential limiting component disposed on the sealing assembly.2. The rotating seal mechanism according to claim 1 , wherein a follower support component is disposed on the sealing assembly claim 1 , and the follower support component is a supporting roller claim 1 , a supporting ring or a supporting block claim 1 , and can roll or slide on an outer circumference of the rotating body and defines a coaxiality between the sealing assembly and the rotating body.3. The rotating seal mechanism according to claim 1 , wherein the sealing assembly comprises a sealing frame body claim 1 , and the sealing frame body is provided therein with a sealing ring claim 1 , a positioning ring for a sealing ring claim 1 , and a gland for a sealing ring claim 1 , the positioning ring for the sealing ring adjoins the sealing frame body and abuts against the sealing ring in a direction close to the rotating body claim 1 , the gland for the sealing ring tightly presses the sealing ring and the positioning ring for the sealing ring in a height direction of the rotating body claim 1 , and the three components cooperate with one another to achieve sealing.4. The rotating seal mechanism according to claim 3 , wherein ...

Sealing apparatus

A sealing apparatus 1 includes a sealing apparatus body 2 and a slinger 3 . The sealing apparatus body 2 includes an annular reinforcing ring 10 and an annular elastic body portion 20 . The slinger 3 includes a flange portion 31 which is an annular portion extending toward an outer periphery side. The elastic body portion 20 includes an annular end-face lip 21 extending toward an inner side and contacting an outer side surface 31 d of the flange portion 31 . At least one shallow groove 33 is formed on the outer side surface 31 d of the flange portion 31 of the slinger 3.

Gasket with a constant section

An annular gasket intended to provide a tight assembly between a first and second pipe after crimping, including an axis of revolution, whereof a section parallel to said axis is a curve formed by a series of an odd number of circle segments C i connected by apices S i forming a regular polygon, i varying from 1 to 2*n+1, n being a positive integer greater than or equal to 1, the apex S i being the center of the circle passing through the apices S i+n and S i+n+i modulo 2*n+1. Such a curve is said to have a constant width. The apices S i advantageously form a polygon.

WHEEL BEARING DEVICE

A sealing device includes a core metal that is fitted to the outer ring, and a sealing member that is fixed to the core metal. The core metal has a cylindrical portion that is fitted to the inner periphery of an end portion of the outer ring, an outer annular portion, and an inner annular portion. The sealing member has a covering portion that covers the outer annular portion and the cylindrical portion, and a space is formed between the covering portion and the flange. The sealing member further has an inner lip portion, and an outer lip portion. The covering portion has a deformed portion used to enlarge the space to suppress stagnation of water in the space. 1. A wheel bearing device comprising:an inner ring having a flange;an outer ring located radially outward of the inner ring;rolling elements disposed between the inner ring and the outer ring; anda sealing device that prevents foreign matter from entering an inside of a bearing, in which the rolling elements are located, whereinthe sealing device includes a core metal that is fitted to the outer ring, and a sealing member that is fixed to the core metal,the core metal has a cylindrical portion that is fitted to an inner periphery of an end portion of the outer ring, an outer annular portion that extends radially outward from the cylindrical portion and that is brought into contact with an end face of the outer ring, and an inner annular portion that extends radially inward from the cylindrical portion,the sealing member has a covering portion that covers a flange side-portion of the outer annular portion and an inner peripheral side portion of the cylindrical portion, a space being formed between the covering portion and a side face of the flange, the sealing member having an inner lip portion that extends from the inner annular portion toward the flange and is in sliding contact with an inner seal face of the flange, and an outer lip portion that extends from the outer annular portion toward the flange, a ...

Rotary seal

A plated coating of metal having a higher ionization tendency than iron is provided on at least either one of: (i) a metal fitting portion between a sleeve of a stainless steel-made slinger of a rotary seal and an inner ring that is a steel-made radially inner member; and (ii) an outside air side surface of the slinger, which includes an outside air side end portion of the metal fitting portion. Even when the solution containing the electrolyte is present on an outside air side of the fitting portion, the plated coating of metal having a higher ionization tendency than iron corrodes first instead of the inner ring that is a steel-made member. Without lowering durability and reliability, a progress of corrosion of a steel-made member is delayed even when a solution containing an electrolyte is present around a contact portion between a stainless steel-made member and a steel-made member.

RADIAL SHAFT SEAL ASSEMBLY WITH AXIALLY ADAPTIVE DEBRIS EXCLUSION FACE LIP AND OIL SEAL FACE LIP

A radial shaft seal assembly is provided including an inner wear sleeve having a cylindrical wall with a bore sized for tight receipt of a shaft therethrough and an exposed cylindrical outer surface. The inner wear sleeve includes an oil side flange and an air side flange extending radially outwardly from the inner wall in axially spaced relation from one another. The assembly includes an outer case having cylindrical outer wall configured for receipt in a housing. An elastomeric body is fixed to the outer case. The elastomeric body includes an annular serpentine portion extending radially inwardly from the outer wall to a radially innermost end. A main seal lip extends from the innermost end of the annular serpentine portion into sealed contact with the oil side flange. A dust lip extends from the innermost end of the annular serpentine portion into sealed contact with the air side flange. 1. A radial shaft seal assembly , comprising:an inner wear sleeve having a cylindrical inner wall with a bore sized for close receipt of a shaft therethrough and an exposed cylindrical outer surface, said inner wear sleeve having an oil side flange and an air side flange extending radially outwardly from said cylindrical inner wall in axially spaced relation from one another;an outer case having cylindrical outer wall configured for receipt in a housing;an elastomeric body fixed to said outer case, said elastomeric body including an annular serpentine portion extending radially inwardly from said outer wall to a radially innermost end;a main seal lip extending from said innermost end of said annular serpentine portion into sealed contact with said oil side flange; anda dust lip fixed to said annular serpentine portion and extending into sealed contact with said air side flange.2. The radial shaft seal assembly of wherein said main seal lip remains spaced radially outwardly from said exposed cylindrical outer surface in its entirety.3. The radial shaft seal assembly of wherein ...

SEALING APPARATUS

A sealing apparatus main body includes a reinforcing ring and an elastic material portion which is attached to the reinforcing ring and formed of an elastic material. The elastic material portion has a side lip formed so as to contact a slinger from the inside, a radial lip formed so as to contact the slinger from an outer periphery side, and an outer peripheral annular projection being an annular projection which is arranged on an outer periphery side of the side lip and protrudes to the outside. The slinger has a fitting portion and a flange portion extending from an outer end portion of the fitting portion to the outer periphery side. The elastic material portion forms a labyrinth seal between the outer peripheral annular projection and the side lip between the elastic material portion and the flange portion of the slinger. 1. A sealing apparatus for sealing a space between an outer periphery side member and an inner periphery side member which is at least partially enclosed by the outer periphery side member , the outer periphery side member and the inner periphery side member being rotatable relative to each other with respect to an axis , the sealing apparatus being characterized by comprising:a sealing apparatus main body attached to the outer periphery side member; andan opposing portion having an annular shape around the axis that is provided on the inner periphery side member on one side in a direction of the axis of the sealing apparatus main body,wherein the sealing apparatus main body includes a reinforcing ring having an annular shape around the axis, and an elastic material portion having an annular shape around the axis which is attached to the reinforcing ring and formed of an elastic material,the elastic material portion includes a side lip formed so as to contact the opposing portion from the other side in the direction of the axis, a radial lip formed so as to contact the opposing portion from an outer periphery side, and an outer peripheral ...

SEALING DEVICE

A sealing device includes a mounted part to be mounted to the inner peripheral surface of the shaft hole, a cylindrical part disposed radially inside the mounted part, a seal lip portion extending from the cylindrical part and in contact with the outer peripheral surface of the rotational shaft, a bellows part connecting the mounted part and the cylindrical part, and an annular sliding member made of a resin and disposed radially inside the cylindrical part, the outer peripheral surface of the rotational shaft being slidable on the annular sliding member. 1. A sealing device for sealing a clearance between a housing and a rotational shaft disposed in a housing , the sealing device comprising:an annular mounted part being to be mounted to an inner peripheral surface of the shaft hole:a cylindrical part disposed radially inside the mounted part;a seal lip portion extending from the cylindrical part and being to be in contact with an outer peripheral surface of the rotational shaft;a bellows part connecting the mounted part to the cylindrical part; andan annular sliding member made of a resin and disposed radially inside the cylindrical part, the outer peripheral surface of the rotational shaft being to slide on the annular sliding member,the cylindrical part, the seal lip portion, and the bellows part being made of an elastic material having an elasticity that is higher than that of the resin,the cylindrical part comprising a projecting portion projecting radially inward, the projecting portion being an annular projection extending continuously in a circumferential direction, or comprising a plurality of projections arranged at intervals in a circumferential direction, the projecting portion comprising two surfaces perpendicular to the rotational shaft,a circumferential groove being formed on an outer peripheral surface of the sliding member, the circumferential groove comprising a cylindrical bottom peripheral surface and two side walls perpendicular to the bottom ...

SEALING DEVICE

A sealing device includes a reinforcement ring and an annular elastic body portion including a main body covering the reinforcement ring, a lip waist portion including an inner circumferential edge portion of the main body, a main lip extending from the lip waist portion to a first target side to be sealed and is to be in slidable contact with a rotary shaft, and a second dust lip extending from the lip waist portion to a second target side opposite to the first target side relative to the sealing device and being provided relative to the main lip with an annular space between the second dust lip and the main lip. The second dust lip includes a first lip slide portion being to be in slidable contact with the rotary shaft, a first protrusion formed on an inner circumferential surface of the second dust lip and closer to the first lip slide portion, and a second protrusion formed on the inner circumferential surface and closer to the lip waist portion than the first protrusion. 1. A sealing device configured to seal an annular gap between two members coupled concentrically and rotatably relative to each other , the sealing device comprising:a reinforcement ring; andan annular elastic body portion comprising:(a) a main body covering the reinforcement ring;(b) a lip waist portion comprising an inner circumferential edge portion of the main body;(c) a main lip extending from the lip waist portion to a first target side to be sealed and is to be in slidable contact with one of the two members; and(d) at least one dust lip extending from the lip waist portion to a second target side opposite to the first target side relative to the sealing device and being provided relative to the main lip with an annular space between the at least one dust lip and the main lip, the at least one dust lip comprising:(i) a first lip slide portion being to be in slidable contact with the one of the two members;(ii) a first protrusion formed on an inner circumferential surface of the at least ...

Plastic injection mold - svg actuator - internal seal upgrade

An improved life hydraulic valve actuator for a mold used in an injection molding machine. The actuator includes a housing for insertion into a hot runner assembly having a movable valve gate pin. A bore in the housing for receives an actuation piston which is connected to the gate pin. A hydraulic chamber in the assembly lifts the piston upward and downward for actuation of the pin in a valve gate. The actuation piston includes a centrally located circumferential double lip seal. The wall of the bore includes a pair of circumferential seals for engaging the outer circumference of the piston. The seals are positioned axially on either side of said centrally located double lip seal of the piston for sealing and guiding the piston. The circumferential bore seals include a Teflon ring which protects the bore in the event of seal failure and a second seal made of a Viton material. The seals in combination increase the longevity of the actuator over three fold than a similar actuation valve.

BUFFER RING

A buffer ring includes an annular body portion that makes close contact with a side wall face of an annular groove ; an inner peripheral lip that extends toward a sealed fluid side O from an inner peripheral end portion of the body portion ; and an outer peripheral lip that extends toward the sealed fluid side O from an outer peripheral end portion of the body portion and having an outer peripheral end portion making close contact with a groove bottom face of the annular groove , the outer peripheral lip being lower in stiffness than the inner peripheral lip , wherein a plurality of protrusions that make close contact with the groove bottom face of the annular groove are provided on an outer peripheral face of the body portion at intervals in a circumferential direction. 1an annular body portion that makes close contact with a side wall face of the annular groove;an inner peripheral lip that extends toward a sealed fluid side from an inner peripheral end portion of the body portion, the inner peripheral lip including an inner peripheral end portion, the inner peripheral end portion of the inner peripheral lip being slidable relative to an outer peripheral face of the shaft; andan outer peripheral lip that extends toward the sealed fluid side and an outer peripheral side so as to be inclined from an outer peripheral end portion of the body portion, the outer peripheral lip including an outer peripheral end portion, the outer peripheral end portion of the outer peripheral lip making close contact with a groove bottom face of the annular groove, the outer peripheral lip being lower in stiffness than the inner peripheral lip,the body portion including an outer peripheral face, the outer peripheral face being provided with a plurality of protrusions that make close contact with the groove bottom face of the annular groove, the plurality of protrusions being located at intervals in a circumferential direction and at locations that are within a region of the outer ...

SEALING STRUCTURE WITH ANNULAR POCKET AND SEALING DEVICE

A sealing structure with an annular pocket and a sealing device includes an annular pocket and a sealing device. The pocket is provided in a slinger, and the sealing device is attached to a housing of a differential device. The slinger is arranged on an output shaft of the differential device. A recessed part of the pocket is defined by an inner peripheral tubular portion, an outer peripheral tubular portion and a bottom portion of the slinger. The outer peripheral surface of the pocket is formed in the outer peripheral tubular portion of the slinger. The outer peripheral surface of the pocket increases in diameter toward the outside in an axis direction. A side lip of the sealing device extends in the outward direction, and an annular gap is formed between the side lip and the pocket. 1. A sealing structure with an annular pocket and a sealing device ,wherein the pocket has an outer peripheral surface having an annular shape around an axis and extending along the axis, forms a recessed part which has an annular shape around the axis and is recessed to one side in a direction of the axis, and is provided to a shaft member that penetrates through a through-hole of an attachment target portion to which the sealing device is attached, and is rotatable around the axis, or a functional member attached to the shaft member;the sealing device includes a seal lip having an annular shape around the axis, and a side lip which has an annular shape around the axis and extends to the one side in the direction of the axis, and is attached to the through-hole of the attachment target portion to perform sealing between the shaft member or the functional member and the through-hole;the outer peripheral surface of the pocket increases in diameter toward the one side in the direction of the axis; andin the sealing device attached to the attachment target portion, the seal lip is slidably in contact with the shaft member or the functional member directly or indirectly, and the side lip ...

METHOD OF MANUFACTURING SEALING MEMBER AND MOLD THEREFOR

A sealing device seals a gap between an inner member and an outer member that rotate relative to each other. The sealing device includes a sealing member. The sealing member includes a rigid ring including a sleeve part and a flange part, and an elastic ring adhering closely to both surfaces of the flange part. The elastic ring includes an annular circular part and water-discharging protrusions on a side of the sleeve part of the rigid ring. The elastic ring includes an annular part on a side opposite the sleeve part. A mold for manufacturing the sealing member includes a first mold including a cylindrical cavity in which the sleeve part is supported, an annular circular cavity for forming the circular part, protrusion cavities for forming the water-discharging protrusions, and posts disposed in the circular cavity and being brought into contact with the flange part of the rigid ring. 1. A method of manufacturing a sealing member provided in a sealing device located between an inner member and an outer member that rotate relative to each other , for sealing a gap between the inner member and the outer member , the sealing member comprising a rigid ring formed of a rigid material and for being mounted on the inner member , the rigid ring comprising a sleeve part and a flange part extending radially outward from the sleeve part; and an elastic ring formed of an elastic material adhering closely to both surfaces of the flange part , the elastic ring comprising an annular circular part and multiple water-discharging protrusions on a side of the sleeve part of the rigid ring , the elastic ring comprising an annular part on a side opposite the sleeve part , the method comprising:preparing a first mold comprising a cylindrical cavity in which the sleeve part of the rigid ring is supported, an annular circular cavity for forming the circular part, multiple protrusion cavities for forming the multiple water-discharging protrusions, and multiple posts disposed in the circular ...

SEAL ASSEMBLY

A seal assembly for sealing a space between a first component and a second component includes a seal base body disposed on the first component and having at least first and second seal lips configured to run on a running surface of the second component with the seal lips contacting the second component at first and second axially spaced locations, the seal base body including an annular channel having an opening facing in the axial direction, and at least one cylinder comprising a bimetallic shape-change element, the cylinder having a first end in the annular channel of the seal base body and a second end outside the annular channel, at least a portion of the cylinder being located axially between the first seal lip and the second seal lip and radially inward or outward from the second seal lip. 1. A seal assembly for sealing a first space with respect to a second space , the seal assembly including a seal base body disposed on a first component and having at least first and second seal lips configured to run on a running surface of a second component , the second component having an axis of rotation extending in an axial direction , the first seal lip and the second seal lip being spaced from each other in the axial direction , the seal assembly further including at least one temperature-sensitive adjusting element disposed in the seal base body and configured to change shape in response to a temperature increase , wherein the temperature-sensitive adjusting element comprises a sleeve extending in the axial direction and being concentric to the axis of rotation , wherein one end of the temperature-sensitive adjusting element extends into a portion of the seal base body , wherein an other axial end of the temperature-sensitive adjusting element is spaced from the seal base body , wherein the seal base body includes a retaining section for retaining the one end of the temperature-sensitive adjusting element , the retaining section being configured as a bent section , ...

UNITIZED LIP SEAL FOR WASH PIPE STUFFING BOX SEALING SYSTEM

A wash pipe stuffing box sealing assembly includes a wash pipe stuffing box with a mandrel sleeve disposed in a bore there through. A plurality of stuffing box adapter rings are disposed in the wash pipe stuffing box and surrounding the mandrel sleeve. An annular seal ring is disposed between a pair of the adapter rings, and includes an annular seal body made of a first material including a radially outer portion and an annular radially inner portion extending radially inward from the outer portion. The inner portion includes an inner surface with an annular contact lip portion and an annular recess portion disposed adjacent to the annular contact lip portion. A secondary sealing ring made of a PTFE (Polytetrafluoroethylene) is disposed in the annular recess portion of the inner portion of the annular seal body and creates additional sealing action from a thermally stable, low friction coefficient material. 1. An annular seal ring , comprising:an annular seal body made of a first material including a radially outer portion and an annular radially inner portion extending radially inward from the outer portion at an acute angle relative to an axis of symmetry of the annular seal body, said inner portion including an inner surface with an annular contact lip portion and an annular recess portion disposed adjacent to the annular contact lip portion; anda secondary sealing ring made of a second material different than said first material and disposed in the annular recess portion of the inner portion of the annular seal body.2. The annular seal ring according to claim 1 , wherein said first material includes at least one of HNBR (Hydrogenated Nitrile elastomer) rubber or FKM (Fluoroelastomer) rubber.3. The annular seal ring according to claim 2 , wherein said second material includes PTFE (Polytetrafluoroethylene).4. The annular seal ring according to claim 1 , wherein said annular recess portion includes a pair of adjacent inward facing surfaces each disposed at an ...

SEALING DEVICE

A sealing device capable of preventing turnover of a dust lip and damage to a dust lip caused by insertion of a shaft. A bumper portion () made of a rubber-like elastic body and reducing an impact that the dust lip () receives from the shaft when the shaft is inserted into the sealing device () is provided on the side opposite to the sealed area (O) with respect to the dust lip (), and an inner diameter of a tip of the bumper portion () on an inner peripheral side is set to be larger than an outer diameter of a part of the shaft on which a main lip () and the dust lip () slide and to be smaller than an inner diameter of a part having the largest inner diameter in a portion connecting the main lip () and the dust lip (). 1. A sealing device sealing an annular gap between a shaft and a housing , comprising:a reinforcing ring having an inward flange portion; anda seal main body made of a rubber-like elastic body, provided integrally with the reinforcing ring, and having a main lip that extends from a vicinity of a tip of the inward flange portion to a sealed area side, and slidably comes into contact with an outer peripheral surface of the shaft, and a dust lip that extends from the vicinity of the tip of the inward flange portion to a side opposite to the sealed area, and slidably comes into contact with the outer peripheral surface of the shaft, whereina bumper portion made of a rubber-like elastic body and reducing an impact that the dust lip receives from the shaft when the shaft is inserted into the sealing device is provided on the side of the dust lip opposite to the sealed area, and an inner diameter of a tip of the bumper portion on an inner peripheral side is set to be larger than an outer diameter of a part of the shaft on which the main lip and the dust lip slide and to be smaller than an inner diameter of a part having the largest inner diameter in a portion connecting the main lip and the dust lip.2. A sealing device sealing an annular gap between a shaft ...

SHAFT SEAL WITH HELICAL SEALING LIP

A seal includes an annular body defining an opening for a shaft. At least one sealing lip is connected to an inner wall of the body and projects inwardly toward a central axis. The one or more sealing lips each include an outer edge connected to the inner wall of the body and an inner edge that is spaced inwardly toward the central axis. Each sealing lip extends helically about the central axis. If multiple sealing lips are provided, each extends helically about the central axis with the same orientation but they are axially offset with respect to each other. One or more helically extending lubricant channels are defined by the helical sealing lip(s) and pump lubricant inwardly upon relative rotation between the seal and shaft. An optional debris lip is located between the flexible sealing lip(s) and the front face of the seal body to inhibit ingress of contaminants. 1. A seal comprising:a body comprising a rear face, a front face, an outer wall, and an inner wall that defines an opening in the body that is adapted to receive an associated shaft, said opening defined about a central longitudinal axis of the body;at least one flexible sealing lip that is connected to the inner wall and that projects inwardly from the inner wall toward the central longitudinal axis, said at least one lip comprising an outer edge connected to the inner wall of the body and comprising an inner edge that is spaced inwardly toward the central longitudinal axis relative to the outer edge, said at least one flexible sealing lip extending helically about said central longitudinal axis.2. The seal as set forth in claim 1 , wherein said at least one helically extending flexible sealing lip defines a helically extending lubricant channel that is defined between said inner wall and axially successive lip portions of said at least one flexible lip.3. The seal as set forth in claim 1 , wherein said at least one flexible sealing lip comprises two or more flexible sealing lips that extend along ...

CARTRIDGE SEAL ASSEMBLIES AND ASSOCIATED METHODS

The present cartridge seal assemblies pertain to rotary lip-type seals. In certain embodiments, a sealing member is constructed of a relatively hard material that increases the lifespan of the sealing member. The sealing member is energized with a canted-coil spring, which in some embodiments includes an adjustable spring force. The present embodiments enable control of sealing force to achieve an appropriate sealing force between the sealing member and the shaft based on factors such as temperature, pressure, rotary speed, properties of fluid media, etc. to achieve longer seal life. 1. A seal assembly for sealing around a rotatable shaft , the seal assembly comprising:a primary seal comprising a first sealing member having an inside flange with a seal lip for sealing against a movable shaft, a first sealing retaining ring engaging the first sealing member and together with the first sealing member defining a spring cavity having a canted coil spring located therein biasing against the seal lip and at least part of the first sealing retaining ring;a backing ring having a radial wall supporting a central portion of the first sealing member and having an outside longitudinal extending shelf and an inside longitudinal extending shelf, said inside longitudinal extending shelf supporting the inside flange of the first sealing member; anda secondary seal comprising a second sealing member having an inside flange with a seal lip for sealing against a movable shaft, a second sealing retaining ring engaging the second sealing member and together with the second sealing member defining a spring cavity having a second canted coil spring located therein biasing against the seal lip and at least part of the second sealing retaining ring; said second sealing retaining ring in contact with the outside longitudinal extending shelf to retain the secondary seal to the backing ring.2. The seal assembly of claim 1 , wherein the primary seal claim 1 , the backing ring claim 1 , and the ...

RECIPROCATING SAW

A reciprocating saw includes a housing assembly, a motor, and a drive mechanism. The drive mechanism includes a gear coupled to and driven by a pinion of the motor for rotation about a first axis. The gear is vertically-oriented within the housing assembly and has an outer periphery. The drive mechanism also includes a spindle reciprocatable relative to the housing assembly, a connecting rod having a first end coupled to the gear and a second end coupled to the spindle to transmit rotation of the gear into reciprocation of the spindle, and a counterweight rotatably coupled to the housing assembly for rotation about the first axis within the outer periphery of the gear. The counterweight is also coupled to the first end of the connecting rod such that the counterweight is moved in a substantially opposite direction than the spindle to counterbalance reciprocation of the spindle. 1. A reciprocating saw comprising:a housing assembly;a motor positioned substantially within the housing assembly, the motor including a pinion; a gear coupled to and driven by the pinion, the gear rotatably coupled to the housing assembly for rotation about a first axis, the gear being vertically-oriented within the housing assembly and having an outer periphery,', 'a spindle reciprocatable relative to the housing assembly,', 'a connecting rod having a first end coupled to the gear and a second end coupled to the spindle to transmit rotation of the gear into reciprocation of the spindle, and', 'a counterweight rotatably coupled to the housing assembly for rotation about the first axis within the outer periphery of the gear, the counterweight also coupled to the first end of the connecting rod such that the counterweight is moved in a substantially opposite direction than the spindle to counterbalance reciprocation of the spindle; and, 'a drive mechanism positioned substantially within the housing assembly, the drive mechanism including'}a bushing surrounding a portion of the spindle, the ...

Seal assembly for a vehicle motorized wheel

A seal assembly configured to prevent/limit the entry of external contaminants into a motor compartment of a motorized wheel for vehicles is described. The seal assembly comprises a first support ring which is fixed, a second support ring which is rotatable and radially outermost of the first support ring, and an annular seal interposed between the support rings and including an anchor portion, attached to the second support ring and at least a first and a second annular sealing lip, protruding cantilevered from the anchor portion, mounted by interference between the support rings, defining a sealing configuration, wherein they cooperate with distinct portions of the first support ring along respective annular contact lines, and set by centrifugal effect in a detaching configuration from the respective portions of the first support ring at speeds of the motorized wheel greater than a predetermined non-zero value.

AXLE SEAL HAVING A MULTI-EDGE CONTACT

An axle seal is provided and includes a seal element having a seal element top, a seal element bottom, a seal element mounting lip which extends downwardly from the seal element bottom, and a seal element sleeve, wherein the seal element sleeve is securely and sealingly associated with the seal element mounting lip, and wherein the seal element includes a circumferential outer edge portion which extends outwardly from at least one of seal element mounting lip and the seal element sleeve to form a circumferential lip around the seal element sleeve and wherein the seal element defines a seal element opening which communicates the seal element top with the seal element bottom. 1. An axle seal , comprising: a seal element top,', 'a seal element bottom,', 'a seal element mounting lip which extends downwardly from the seal element bottom, and', 'a seal element sleeve, wherein the seal element sleeve is securely and sealingly associated with the seal element mounting lip, and', 'wherein the seal element includes a circumferential outer edge portion which extends outwardly from at least one of seal element mounting lip and the seal element sleeve to form a circumferential lip around the seal element sleeve and wherein the seal element defines a seal element opening which communicates the seal element top with the seal element bottom., 'a seal element having'}2. The axle seal of claim 1 , wherein the seal element includes a substantially flat center portion claim 1 , a first raised portion and a second raised portion separated by a first valley portion claim 1 , wherein the first raised portion and second raised portion are located inward from the circumferential outer edge toward the center portion.3. The axle seal of claim 2 , further including a gradual transition between the first valley portion and the first and second raised portions.4. The axle seal of claim 1 , wherein the seal element opening is configured to sealingly associate with an axle having an axle diameter ...

SEALING DEVICE

A sealing device including a sealing device main body mounted on one of two members that rotate relatively, and a seal flange mounted to the other of the two members The sealing device main body is provided with a structure provided with a seal lip slidably connected to a seal flange and a tube part positioned further to the outer side than the seal lip . A labyrinth lip is provided on the sealing device main body positioned further to the outer side than the seal lip and, the labyrinth lip extends towards the radially opposite side to the tip end of the seal flange facing the tube part in a radial direction, as the tip end closely faces the seal flange in an axial direction, and a labyrinth gap is formed between the labyrinth lip and the seal flange and the tube part 1. A sealing device , comprising:a sealing device main body mounted on one of two members that rotate relatively, and a seal flange mounted to the other of the two members;wherein, the sealing device main body is provided with a structure provided with a seal lip slidably connected to the seal flange, and a tube part positioned further to the outer side than the seal lip;a labyrinth lip is provided on the sealing device main body positioned further to the outer side than the seal lip; andthe labyrinth lip extends towards the radially opposite side to the tip end of the seal flange facing the tube part in a radial direction, as the tip end closely faces the seal flange in an axial direction, and a labyrinth gap is formed between the labyrinth lip and the seal flange, and the tube part.2. The sealing device according to claim 1 , wherein the seal flange is inclined further towards the labyrinth lip side on the tip end side than the opposite position of the tip end of the labyrinth lip. This application claims the benefit and priority of Japanese Application No. 2016-198667, filed Oct. 7, 2016. The entire disclosure of the above application is incorporated herein by reference.The present disclosure ...

EXCLUSION AND PULSATION SEAL FOR HYDRAULIC FRACTURING PUMP

An annular seal, such as for use in a fracking pump, that is designed to exclude debris from entering the sealing gland, and is designed to enhance seal stability and extrusion resistance during high-pressure pulsation events. The seal includes a heel side configured to fit within an annular groove of a first component, a sealing side opposite the heel side that is configured to seal against a second component, and opposite leading and trailing sides that are radially interposed between the sealing and heel sides. The heel side may have a flat heel surface in transverse cross-section. The sealing side may have a concave portion that is configured to open toward and face the second component. The leading side is configured to face toward upstream fluid, and may have a flat leading surface in transverse cross-section that is oriented perpendicularly to a longitudinal axis of the seal. 1. An annular seal that at least partially encompasses a longitudinal axis , the annular seal comprising:a heel side configured to fit within an annular groove of a first component, the heel side having an axially extending flat heel surface in transverse cross-section when the seal is in an uncompressed state, the flat heel surface being configured to face a bottom of the annular groove;a sealing side that is opposite the heel side and is configured to seal against a second component, the sealing side having a concave portion that is configured to open toward and face the second component; anda leading side that is interposed between the sealing side and the heel side, and is configured to face toward upstream fluid when in use, the leading side having a flat leading surface in transverse cross-section when the seal is in an uncompressed state, wherein the flat leading surface is disposed in a plane that is perpendicular to the longitudinal axis.2. The annular seal according to claim 1 , wherein the concave portion has a radially protruding pedestal portion.3. The annular seal according ...