... materials for silicone, NBR, fluorosilicone, viton (FKM), viton DuPont and Dow elastomers, neoprene, HNBR, NBR+PVC, natural rubber, SBR, IR, IIR ... (butyl rubber), CR (neoprene), SBR, AU, ACM, CO; NSF-61 approved material, meet drinking ... from drawing, tool design to mold support and samples 6) Customers' designs and specifications are accepted 7) Available in various ...