Cylinder with front cover special-shaped dustproof sealing ring

A cylinder with a front cover special-shaped dustproof sealing ring comprises a front cover, a rear cover, a cylinder barrel, a piston rod, a piston, a valve core, a front cover press block and a front cover dustproof seat. The front cover, the cylinder barrel and the rear cover are connected in sequence, the piston rod penetrates through the front cover, a part of the piston rod is arranged in the cylinder barrel, the piston is arranged in the cylinder barrel and connected with the piston rod, the valve core is arranged in the piston and connected with the piston, the front cover dustproof seat is arranged in the front cover, the cylinder further comprises the front cover special-shaped dustproof sealing ring, and the front cover special-shaped dustproof sealing ring is arranged between the front cover dustproof seat and the front cover press block and is connected with the piston rod in a sleeved mode. The front cover special-shaped dustproof sealing ring is a round hollow piece body, and the thickness of a portion, close to the circle center, of the front cover special-shaped dustproof sealing ring is smaller than the thickness of the outer edge portion. The cylinder with the front cover special-shaped dustproof sealing ring has the advantages of being good in sealing performance, and stable in property.