Patent ID: 6250645
Filing Date: 2001-06-26
Classification: F16J

Abstract:
A metal gasket comprising:a metal plate having a hole, an edge portion around the hole, and a base portion extending substantially throughout an entire area of the gasket and located outside the edge portion,at least one first annular projection and at least one first annular groove formed on one side of the edge portion of the metal plate, said at least one first annular groove being located between the at least one first annular projection and the base portion, andat least one second annular projection and at least one second annular groove formed on the other side of the edge portion of the metal plate and arranged symmetrically to the at least one first annular projection and at least one first annular groove relative to a center plane of the metal plate, the base portion having a thickness greater than a thickness between the first and second annular grooves and less than a thickness between the first and second annular projections to thereby provide a surface pressure at the first and second annular projections.