oil seal 1.Materials: NBR, FKM PTFE EPDM ,SBR ,SR ,CR ,Silicon, etc. 2.Various sizes. 3.Superior quality FAB V type cylinder DAS ... 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 ...