Patent ID: 7278639
Filing Date: 2007-10-09
Classification: F16J

Abstract:
1. A gasket comprising: a base sheet of contiguous substantially porous gasket material having a predetermined thickness and two opposed substantially parallel faces lying in respective facial planes, said faces for contacting respective flange surfaces between which said gasket is to be clamped; said base sheet being configured to define at least one aperture bounded by an interior edge of said base sheet; an edge coating disposed on and extending around said interior edge of said base sheet, said edge coating being formulated of a compressible material that provides a seal when compressed between a pair of flange surfaces; said edge coating having an interior surface facing said aperture and an exterior surface facing said interior edge of said base sheet and being inboard of said interior edge such that said edge coating does not overlap onto said parallel faces, said interior surface being convex in shape, and said exterior surface being generally convex in shape with a flattened central portion on said interior edge of said base sheet, said interior surface and said exterior surface being coterminous at a first endpoint and a second endpoint, wherein said first endpoint and said second endpoint lie in respective planes spaced from the facial planes of said two opposed substantially parallel gasket faces to form a pair of rims protruding from said opposed substantially parallel gasket faces.