... more than 20 years, wide varieties, rich materials, and custom rubber products are our advantage, we can design and produce according ... washer, NBR washer, PU washer, NR washer, etc.NBR Flat Rubber Washer SizeMaterialDuroColoras per your sizeNBR40~95 Shore ABlackPropertiesResistance to water ... to +110°CHardnessRange (Shore A) 40° to 90° NBR Flat Rubber Washer as below, Duro 70, OD86 × ID70 × TK6 MM