... static seal and dynamic seal, main material contains: NBR,SR,VITON,SILICON PTFE,HNBR,PU etc. Feature of O-Ring : 1 ... , aromatic hydrocarbons and animal and vegetable oils. MertirialApplications HardnessPerformanceDocumentNBR,FPM (VITON) , MVQ (SILICONE) , ACM ,EPDM ,PTFEHNBR ,automobile, motorcycyles, agricultural machinery ,trucks ...