... gasket with higher quality and competitive price. FDA silicone rubber o ring Features,1) Available material : material for Silicone NBR,Fsil, ... (FKM)&Dow elastomers,Neoprene,HNBR,Natural rubber,SBR,IR,IIR(butyl rubber),ACM ect.NSF an KTW approved for material EPDM. ... has low tensile, tear and wear resistance9)Widely applied in faucet,toilets,fittings,pipes,showers and other industry accessories,and ...