1.ISO Certification 2.Model:TA ,TC ,TB ,SB,SC,SA,HTCR,HTCL etc. 3.Precisely mold design 4.OEM/ODM service oil seal 1.Materials: NBR, NR ,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 Rubber Oil Seal: TC, TB, TA, SC, SB, SA, VC, VB, VA ...