Metal laminate gasket with irregular size seal ring

A metal laminate gasket for an internal combustion engine, said engine having a hole to be sealed and bolt holes situated around the hole, comprising:

• a first metal plate including a base portion extending substantially throughout an entire area of the gasket, a curved portion extending from the base portion to define a first opening corresponding to the hole of the engine, a flange extending from the curved portion and located under the base portion, and second openings corresponding to the bolt holes of the engine,
• a second metal plate situated under the base portion, said second metal plate having a third opening greater than the first opening so that the second metal plate does not overlap the flange, and fourth openings situated under the second openings,
• a metal ring situated between the flange and the base portion, and having narrow portions and wide portions alternately arranged to each other, said wide portions being located close to the second and fourth openings corresponding to the bolt holes so that high tightening pressures when bolts disposed in the bolt holes are tightened are supported at the wide portions.