Cylinder head gasket cylinder opening sealing structure

The utility model discloses an air cylinder gasket cylinder opening sealing structure which comprises a gasket body, and the gasket body is formed by vertically stacking and combining a plurality of layers of metal plates. The multi-layer metal plate is characterized in that the multi-layer metal plate comprises an upper metal plate, a middle metal plate and a lower metal plate, and the number of the upper metal plate and the number of the lower metal plate are one or more; cylinder opening sealing large corrugations are arranged on cylinder opening portions of the upper metal plate, the middle metal plate and the lower metal plate, inner ring thin corrugations are arranged on the inner side of the middle metal plate, and outer ring local thin corrugations are arranged on the outer sides of the cylinder opening sealing large corrugations of the middle metal plate. The thin corrugations of the inner ring of the middle metal plate have the functions of adjusting the thickness of the cylinder opening and assisti