... stability 2.Various of materials,such as NBR,EPDM,NR,SBR etc 3.Factor direct sales. Specifications1) Made of high quality ... avaliableCertificationISO9001-2008,SGS,FDA,ROHSApplicable material: SIR, NBR, CR, NR, SBR, EPDM, FKM, IIR, BR etc..Packing Spec.Standard packing: a ...