... : silicone, NBR, fluorosilicone, Viton (FKM), Viton DuPont and Dow Rubber and Metal Parts Features:1) Available materials: silicone, NBR, fluorosilicone, Viton (FKM), Viton DuPont and Dowelastomers, neoprene ... , HNBR, NBR + PVC, natural rubber, SBR, IR, IIR (butyl rubber),CR (neoprene), SBR, AU ...