Sealing Structure

Abstract

The present invention provides a sealing structure, comprising a solid regular-shaped sealing ring and a second sealing ring. The inner surface of the second sealing ring is provided with a mounting groove for the solid regular-shaped sealing ring, and the outer surface is provided with an annular protrusion to form a sealing fit with a sealing mating surface. The solid regular-shaped sealing ring is softer than the second sealing ring, and clearance gaps are provided between the two sidewalls of the mounting groove and the solid regular-shaped sealing ring, allowing the solid regular-shaped sealing ring to freely deform toward both sides when subjected to pressure. A groove is further provided at the centerline of the bottom of the mounting groove. The sealing structure of the present invention can be applied in various scenarios such as oil cylinders, and is capable of ensuring sealing performance while controlling the friction between sealing mating surfaces, thereby preventing excessive friction. In addition, it improves the internal structure of the composite sealing ring and enhances sealing stability during reciprocating motion.

Dependencies are inferred from the claim text.