Patent ID: 7073795

Claim:
A metallic gasket comprising a base plate made of a thin metal plate, said base plate having formed therein one or not less than two openings and a metal bead of a convex cross-section formed along seal lines by bending said base plate in the through-thickness direction, said metal bead being deformed in the through-thickness direction to seal a joint of opposing joint surfaces when said metallic gasket is sandwiched between said joint surfaces, wherein an elastic sealing material deformable under compression in cooperation with deformation of said metal bead is fixed at least to a convex portion of said metal bead and is filled in a concave portion on the reverse side of said convex portion, and the height of said elastic sealing material on a surface of said convex portion side is made equal to or substantially equal to the height of said convex portion, and wherein on the surface of said base plate on said convex portion side of said metal bead, said elastic sealing material deformable under compression in cooperation with the deformation of said metal bead is fixed also to portions of said surface of the base metal facing at least one of an outer peripheral edge of said joint surface and an inner peripheral portion of an opening of said joint surface opposite said surface of the base plate and wherein to the whole peripheral edge of or a part thereof in an least one of an inner peripheral edge of said hole formed in said base plate and an outer peripheral edge of said base plate, a thickness-increased portion is formed by upwardly folding back at least one of said inner peripheral edge of said hole and said outer peripheral edge of said base plate, with a thickness higher than the remaining areas of said base plate and lower than said convex portion of said metal bead to regulate the deformed amount in the through-thickness direction of said elastic sealing material.