nok oil seal catalog 1:Material:NBR,Silicone,FKM,etc. 2:Various type:TC, ... ,Etc. 3:various size. 4:Good quality nok oil seal catalog ASTM/DIN ISONBRACMVMQFKM(NEM)HNBR(NEM)PIFEFKMWear Resistancevery goodmoderatemoderatevery good ... gaskets,rubber ring,sealing rings, sealing gaskets. nok oil seal catalog