... : Silicone ,NBR,SBR,NR,CR,EPDM, etc 2,Color: available 3.OEM/ODM orders are welcome NameRubber seal,Rubber O-Ring , ... oil seal, Rubber GasketMaterialEPDM,NBR,SBR,CR,NR,SIL,VT,HNBR ... injection or extrusionTesting instrumentsVulcanization tester; Tensile tester; Rubber durometer; Imaging size projector; insulation resistance tester etc. O-ring