This product combines the elasticity of the elastomer polytetrafluoroethylene/silicon with the chemical resistance of polytetrafluoroethylene. Suitable for almost all chemical media. Excellent sealing performance, long service life, and meet hygiene requirements. In addition, there are professional production lines for conventional O-rings such as fluorine rubber, EPDM rubber, nitrile rubber, cyanide nitrile rubber, etc. Thousands of molds can meet customers' different size requirements.