As a manufactory we can supply all kinds of rubber washers for you . Detailed Product DescriptionFeatures: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, CO, NSF-61 approved material, meet drinking water system2) All manufacturing processes confirm ...