One-side or two-side sealing structure

The utility model discloses a single-side or double-side sealing structure, which mainly comprises a sealing element main body, a metal framework for supporting the main body is arranged on the sealing element main body, an O-shaped ring groove, a thin-wall waist part and a lip are arranged on one side or two sides of the sealing element main body, an O-shaped ring is arranged in the O-shaped ringgroove, and the lip is arranged in the O-shaped ring groove. The diameter of the O-shaped ring is larger than the width of the O-shaped ring groove, the thin-wall waist portion and the lip opening are located below the O-shaped ring groove, the thin-wall waist portion is located at the front end of the lip opening and used for connecting the sealing piece body and the lip opening, and the lip opening is in interference fit with a shaft to be sealed. The main body is made of the PTFE material, the rubber O-shaped ring provides radial force for the sealing lip, and the sealing lip has the advantages of high temperature