Metal gasket

摘要

A metal gasket includes first and second metal plates laminated together to form the metal gasket, and having holes to be sealed. At least one of the first and second metal plates has a half bead surrounding the hole. A surface pressure assistance plate is located at least adjacent to the half bead between the first and second metal plates. The assistance plate has depressions and projections with respect to a thickness direction thereof in at least a peripheral part thereof.

主权项

1. A metal gasket comprising:
first and second metal plates laminated together to form the metal gasket, each of said first and second metal plates having an outer edge, a hole to be sealed and an inner edge for defining the hole, at least one of the first and second metal plates having a half bead surrounding the hole, and a surface pressure assistance plate located at least adjacent to the half bead between the first and second metal plates, said assistance plate having depressions and projections with respect to a thickness direction thereof, said assistance plate having a ring shape surrounding the hole to be sealed and being located away from the outer edges of the first and second metal plates without extending throughout entire areas of the first and second metal plates.