... thousand toolings of o-rings, gaskets, washers. Oil Resistance BUNA-N rubber seal:1) Available material : material for NBR,FKM,FPM ... (FKM)&Dow elastomers,Neoprene,HNBR,Natural rubber,SBR,IR,IIR(butyl rubber),ACM ect.NSF an KTW approved for material EPDM ... get much more information from our websit Oil Resistance BUNA-N rubber seal