... Silicone Any size and color are available O-ring (Rubber o-ring,Silicone o-ring,o-ring seal) Features: 1) Main products: O- ... (AS-568 standard, PG standard and any non-standard o-ring), washer, oil seal, cup seals, gaskets, U-rings, V- ... rubber, nitrile rubber, EPDM, neoprene rubber, viton DuPont & Dow elastomers, natural rubber, SBR, fluorosilicone, acrylics4) Usual color: red, blue, yellow, black5 ...