... Made with all kinds of rubber. 1) Material: silicone, fluoro silicone, viton (FKM), neoprene,HNBR, NBR+PVC, NBR, natural rubber, SBR,IR, IIR (BUTYL ... RUBBER), CIIR, CR (neoprene),EPDM are available2) Excellent ... , excellent oil resistance, high temperature stability, etc. Small Magic rubber seals