... we can supply all kinds of rubber washers for you . Rubber washersDetailed Product Description Features:1) Available material: ... 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 ...