Patent ID: 6093467
Filing Date: 2000-07-25
Classification: F16J,Y10T

Abstract:
A sealing gasket comprising a sheet with two opposed, substantially parallel faces, said gasket further having an edge surface disposed between each face, said edge surface being around an aperture, said edge surface being substantially perpendicular to each face, the edge surface further having a sealing coating disposed thereon which is wider than the edge surface in a face to face direction parallel to the edge surface so that the coating protrudes at least about 1 mil beyond at least one face and extends past the face in a direction perpendicular to the face to provide a barrier against fluids, said coating further covering all portions of the edge in order to give the gasket a good sealing ability, and said coating further being thick enough on the edge to seal the gasket against fluids from going through the edge, further providing that the sheet comprises fiber in a amount in the range of from about 5 to about 70% by weight, filler in an amount in the range of from about 1 to about 92% by weight, and binder in amount of from about 3 to about 40% by weight, said sheet further being compressible and porous and the edge of the aperture having pores which are sealed off by the coating on the edge, further providing that to preserve compression failure resistance less than about 50% of the gasket has a coating for sealing ability.