... . 2.Material available in rubber, plastic, and other custom compoun neoprene washer1)We have kinds of material : NBR,HNBR,EPDM,SILICONE ... °C),ACM(-30~180°C),VITON(-25~300°C) Color :Red,Yellow,Green,Blue,Purple, Black, White, Clear, etc SPECIAL Features ... born by the buyer; 2)Large quantity, sea/air freight NEOPRENE RUBBER WASHER