... chemical and physical property mechanical seal Excellent chemical and physical property, oil resistance, high temperature stability, ... .1) Material: silicone, fluoro silicone, viton (FKM), neoprene,HNBR, NBR+PVC, NBR, natural rubber, SBR,IR, IIR (BUTYL RUBBER), CIIR, CR ... : 90-95 ShoreWelcome to contact us for detailed information. mechanical seal Excellent chemical and physical property