As a manufactory we can supply all kinds of rubber washers for you . Detailed Product Description Features:1) Available ... FKM), viton DuPont & Dow elastomers, neoprene, HNBR, NBR + PVC, natural rubber, SBR, IR, IIR (butylrubber), CR (neoprene), SBR, AU, ACM, ... various sizes and colors8) Available in various metal, such as iron, copper, aluminium and stainless steelInner packing:500pcs/bag Rubber seals