Metal gasket

A metal gasket for providing a high-pressure combustion gas seal, the metal gasket comprising at least one metal gasket substrate having a cylinder hole opened at a position corresponding to a cylinder bore of a cylinder block of an internal combustion engine, and a circumferential bead formed circumferentially around the cylinder hole;

• wherein
• the circumferential bead is provided with a first bead portion formed of a pair of inclined walls each extending from the gasket substrate to a tip end, the tip ends of the pair of the inclined walls being spaced from each other, and
• a second bead portion extending from the tip ends of the inclined wall in a direction opposite to the protruding direction of the inclined walls to form a valley-like cross section;
• and
• the following relationships are satisfied:
• Fh1>Fh2 and W1>W2
• where Fh1 is a maximum height of the first bead portion, Fh2 is a maximum height of the second bead portion, W1 is a half of a maximum width of the circumferential bead, and W2 is a maximum width of the second bead portion, wherein Fh1 and Fh2 are measured along the protruding direction of the inclined walls and W1 and W2 are measured along a direction perpendicular to the protruding direction of the inclined walls, and wherein
• a ratio of the height of the second bead portion to the height of the first bead portion (Fh2/Fh1) is within a range of 0.037 to 0.37.