... resistance and Color stability 2.Various of materials,such as NBR,EPDM,NR,SBR etc 3.Factor direct sales. Specifications1) Made ... silicone material, other rubber material also available, such as NR, NBR, CR, EPDM etc. 2)Color and shape can be changed ... size will be avaliableCertificationISO9001-2008,SGS,FDA,ROHSApplicable material: SIR, NBR, CR, NR, SBR, EPDM, FKM, IIR, BR etc..Packing Spec ...