CORROSION RESISTANT EMI SHIELDING GASKET

Form stable gasket providing corrosion resistance, the gasket comprising a core of a plastic matrix binder and electrically conductive metal particles, the particles being homogeneously dispersed therethrough in an amount sufficient to provide electromagnetic energy shielding, and an outer electrically non-conductive insulator shell of the thickness of a film encapsulating the core, said shell being penetrable by said particles when said gasket is squeezed between the two waveguide flanges or other surfaces in order to make electrical contact therewith.