... various 3.you can order ahead of time Double Lip TC Oil Seal Standard Material Properties ASTM/DIN ISONBRACMVMQFKM(NEM)HNBR(NEM ... , SILICONE, VITON,HNBR, CR, PTFE, EPDM, etc. Can choose on your requirement;2. types of Rubber Oil Seal: TC, TB, TA, SC ... size.4.Optional color for you of the Oil Seal,Rubber Oil Seal,Rubber Seal,Rubber Gasket, O-Ring :Black, red, yellow, brown ...