Air cylinder cover gasket

The invention discloses an air cylinder cover gasket which comprises a frame body and bearing plates, wherein the frame body is provided with a cylinder mouth part and cylinder cover bolt tack hole parts; the frame body is a single-layer plate except the cylinder mouth part; the cylinder mouth part is a multi-layer plate; and the bearing plates are separately arranged at the cylinder cover bolt tack hole parts and used for adjusting the whole surface pressure of the air cylinder cover gasket. According to the air cylinder cover gasket, the cylinder mouth part and the cylinder cover bolt tack hole parts of the air cylinder cover gasket are separately designed, so that sealing of an air cylinder is ensured, a material is saved, and the air cylinder cover gasket is environment-friendly.