... 3.OEM/ODM orders are welcome NameRubber seal,Rubber O-Ring ,oil seal, Rubber GasketMaterialEPDM,NBR,SBR,CR,NR,SIL,VT ... Different Sizes are availableLogoas clients’s requestSurfacecoating with Teflon, Talc ,Graphite.etcCertificateISO9000 and NSFRubber compoundCan be UL, FDA, ROSH, REACH approvedMode ... ; Rubber durometer; Imaging size projector; insulation resistance tester etc. O-ring