... ) Available materials: 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 ...