... ) O-ring (Rubber o-ring,Silicone o-ring,o-ring seal) Features: 1) Main products: O-rings (AS-568 standard, PG ... standard and any non-standard o-ring), washer, oil seal, cup seals, gaskets, U-rings, V-rings, Y-rings, back ... parts3) Materials include: silicone rubber, nitrile rubber, EPDM, neoprene rubber, viton DuPont & Dow elastomers, natural rubber, SBR, fluorosilicone, acrylics4) Usual color ...