Abstract: A metal laminate cylinder head gasket includes first and second metal plates laminated together. The first metal plate has a combustion hole, and an asymmetrical bead formed around the combustion hole. The asymmetrical bead has a large radius portion with a width (a) at a side of the combustion hole from a top of the bead, a small radius portion with a width (b) at the other side from the top of the bead, and a smallest radius (R). The second metal plate is laminated at a projecting side of the asymmetrical bead. A relationship between (a) and (b) is (a)>(b), the smallest radius (R) is (R)?0.5 mm, and a relationship between the width (a) and the radius (R) is (a)?2(R).

Abstract: An oil ring for an internal combustion engine capable of securing an area of an oil-passing hole without deteriorating the strength of the oil ring. To achieve this the oil ring is provided with an oil-passing hole including: two arc portions disposed at both ends in circumferential direction, so as to be opposed to each other; two parallel straight portions disposed so that a widthwise direction distance therebetween is longer than a width of the arc portion; and inclined portions for connecting the arc portions and the parallel straight portions to each other.