... 4.long work life 5.high quality Big TC oil seals 440 x 490 x 25mm 1. Material: NBR, SILICONE, VITON,HNBR ... KA, DC, DB etc.3. Different sizes of Oil Seal,Rubber Oil Seal,Rubber Seal, also can make on your size ... .4.Optional color for you of the Oil Seal,Rubber Oil Seal,Rubber Seal,Rubber Gasket, O-Ring :Black ... on your order;5. Your OEM order of Oil Seal,Rubber Oil Seal,Rubber Seal or O-Ring and Rubber ...