| 摘要 |
<p>A metal gasket (1) is formed of first, second and third metal plates (11, 12, 13) laminated together. The first metal plate has a first hole (11h), and the second metal plate is situated above the first metal plate and has a second hole (12h). The second hole is greater than the first hole and has a second edge (12f) located above the first metal plate. A first bead (11b) is formed in at least one of the first and second metal plates (11, 12) to surround the first and second holes. The third metal plate (13) includes a base portion (13a) situated above the second metal plate, a curved portion (13d) extending from the base portion and situated inside the first and second holes, and a flange (13e) extending from the curved portion and situated under the first metal plate. The flange has a third edge (13f) located between the first and second edges (11f, 12f), so that high surface pressure areas (5, 7) are formed above the flange and the first bead with a low surface pressure area (6) therebetween, by which the gasket can be securely sealed. <IMAGE></p> |
