| 摘要 |
A metal gasket (A-F) is formed of a metal plate (A10-F10) having a hole (Hc), an edge portion (A10a) around the hole, and a base portion (A10b) extending substantially throughout an entire area of the gasket and located outside the edge portion. At least one annular projection (A12-F12) and at least one annular groove (A11-F11) are formed on at least one side of the edge portion of the metal plate as one unit. The annular groove is located between the annular projection and the base portion. The base portion (A10b) of the metal plate has a thickness (t2, t2') greater than a thickness at the annular groove and less than a thickness (t1, t1') at the annular projection to thereby provide a surface pressure at the annular projection (A12-F12). |
