commodity: o-ring kit use:auto repair material:NBR,HNBR,EPDM,FKM,F.Silicone,NR,CR,SB... color:as per your requirement O RING KIT FOR AUTO PARTSNBR EPDM FKM O ring kit:1) Available material : material for NBR,FKM,FPM,VITON(FKM)&Dow elastomers,Neoprene,HNBR,Natural rubber,SBR,IR,IIR(butyl rubber),ACM ect.NSF an KTW approved for material EPDM.2) All manufacturing processes confirm to the ISO/TS16949 ...