Abstract: A gasket provided between two members for sealing a space therebetween. The gasket comprises a plurality of annular seal parts and a coupling part for coupling the annular seal parts. At least one of the annular seal parts and the other annular seal parts to be coupled with the one annular seal part are made of different materials, and the coupling part for coupling the annular seal parts made of different materials has a joint part for jointing the different materials.

Abstract: A sealing cap made of metal adapted to be fitted into an end opening of a cylindrical mechanical member for closing an inner cylindrical portion of the mechanical member. The sealing cap comprises a disk-like cap body and a cylindrical portion integrally extended from a circumferential edge portion of the cap body and fitted under pressure into the end opening of the inner cylindrical portion of the cylindrical mechanical member. The cap body includes an inclined surface portion whose diameter is gradually reduced toward inner side of the inner cylindrical portion of the cylindrical mechanical member.