oil seal 1.Materials: NBR, FKM PTFE EPDM ,SBR ,SR ,CR ,Silicon, etc. 2.Various sizes. 3.Superior quality steyr STR sinotruck wheel hub oil seal for HOWO1.Materials: NBR, FKM FPM Viton PTFE EPDM ,SBR ,SR ,CR ,Silicon, etc. 2.Various sizes. 3.Superior quality. Oil SealRubber Oil Seal, Rubber Seal.1. Material: NBR, SILICONE, VITON,HNBR, CR, PTFE, EPDM, etc. Can choose on your requirement;2. types of ...