Performance and use : SYPGW piston seal has good wear resistance, low friction coefficient and easy installation. Material : The main sealing material is imported composite PTFE, the support ring is POM, and the rubber is NBR (or FKM) 70Shore A. Working conditions: Working pressure: ≤50Mpa. Working temperature: -40~+110℃. Working speed: ≤1.2m/s. Medium: commonly used hydraulic medium. design standards: Groove dimensions conform to B+S's PHD and Parker's CT groove standards.