... delivery & top quality 4) Professional Features of our rubber washer· Working temperature: -100 to +300 degrees;· ... Wear and tear resistance, Durable;· UL & SGS certification;· Rubber Material: NBR, HNBR, XNBR, EPDM, CR, NR, SBR ... .· Color: Regularly black, red, blue, yellow for rubber material, for silicone, any colors are available according to ... in person at any time. rubber washer for auto parts