... Temperature: -40 to +150 degrees 3.Hardness: 30-90 Shore-A or IRHD rubber cushion MaterialNBR, EPDM, NR, Viton, Rubber, Silicone ... chemical resistance. It also has good mechanical properties over a wide temperature range.Harness: 20,30,40,50,60,70,80 shores ... A are available.Anti-aging, anti-radiation, good flexibility, good elasticityWorking ...