... ,EPDM,SBR,FPM 2.the size is 440 x 490 x 25mm 3.verious colours 4.long work life ... 5.high quality Big TC oil seals 440 x 490 x 25mm 1. Material: NBR, SILICONE, VITON,HNBR, ... , 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, red, yellow ...