... , oil seal, cup seals,gaskets, U-rings, V-rings, Y-rings, back-up rings, etc.2) Custom design rubber parts3) NSF approved ... , potable water components4) Materials include: silicone rubber, nitrile rubber, EPDM, neoprene rubber, viton DuPont & Dow elastomers, natural rubber, SBR, fluorosilicone, acrylics5) Usual color: red ...