inch rubber o ring kit box: As a leading manufacturer of rubber products, we can ... different standards of o ring kits. Inch rubber o ring kit Features:1) Available material : material for Silicone NBR,Fsil,VITON ... (FKM)&Dow elastomers,Neoprene,HNBR,Natural rubber,SBR,IR,IIR(butyl rubber),ACM ect.NSF an KTW approved for ... and aging, wearable,great flexibility etc. inch rubber o ring kit box