| 摘要 |
A metal gasket of the invention is used for an internal combustion engine and is basically formed of one metal plate. The plate includes a hole, an elongated or annular recess formed on the metal plate to surround the hole and a bead formed in the elongated recess. The elongated recess extends from an outer surface of the metal plate, and the thickness of the bead is less than the thickness of the metal plate. A top portion of the bead projects outwardly beyond the outer surface of the metal plate. Thus, when the metal plate is tightened, the top portion of the bead is compressed to a level corresponding to the outer surface of the plate to protect the bead. Therefore, creep relaxation of the bead is reduced or prevented.
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