... , PTFE, EPDM, etc. Can choose on your requirement;2. types of Rubber Oil Seal: TC, TB, TA, SC, SB, SA, VC, VB ... can make on your demand;4. Different sizes of Oil Seal,Rubber Oil Seal,Rubber Seal, also can make on your size.5 ... .Optional color for you of the Oil Seal,Rubber Oil Seal,Rubber Seal,Rubber Gasket, O-Ring :Black, red, yellow, brown ...