Metal gasket with peripheral bead

摘要

A metal gasket for an internal combustion engine is formed of a metal plate having a first side and a second side opposite to the first side, and at least one first hole corresponding to a cylinder bore. The first hole is located closer to the first side than to the second side to thereby form a first area at the first side and a second area greater than the first area at the second side. A first bead is formed in the metal plate to extend along an entire outer periphery of the metal plate. The first bead has a first portion located at the first side and a second portion located at the second side. The first portion has a spring constant greater than that at the second portion to thereby provide a tightening pressure on the metal plate as equal as possible. When sealing devices are formed around the fluid holes, the sealing devices can be equally compressed to securely seal therearound.