1.Terials:NBR,silione,NR,SBR,etc 2.Various types and color are available 3.Good quality with competitive price 1.Terials: ... high quality but competitive price for Oil Seal,O-Ring,Rubber Ring,Sealing Ring,SealingGasket. color rubber cap,rubber plug (SILICONE,EPDM,SBR,NR)