... seal, main material contains: NBR,SR,VITON,SILICON PTFE,HNBR,PU etc. Feature of O-Ring :1. Several material ... can make on your demand; 3. Many types of O-Ring : O-type, E-type, U-type, V-type and ... . 5. Optional color for you of the oil seal, O-Ring and rubber gasket: Black, red, yellow, brown, ... promise the high quality but low price of Oil seal, O-Ring , Rubber seal, Rubber gasket, Rubber ring, Sealing ...