O Ring manufacturer / supplier in China, offering Wrap Ring Fluorine Resistant High Temperature Material FEP PFA Outer PTFE Inner Fluorine Rubber Silicone, Polyurethane Material 100*115*12 Un Uns Uhs Type Hydraulic Cylinder Piston Rod Oil Seal, GDK Seal-Uns Uhs Dhs Idi Idu Bas BS UR PU TPU Polyurethane NBR FKM Hydraulic Rod Piston Wiper Dust Oil U Cup Seal and so on.