1. Material: Silicone, NR, NBR, EPDM, CR, Viton, or as your requests 2. Hardness: Durometer 40-85 Shore A Custom Made Rubber Products in NBR, EPDM, Neoprene 1. Material: NBR, EPDM, NR, SBR, SIR, SILICONE 2. Hardness: 30-90 Shore 3. Temperature range: -40 to 230 degree Celsius 4. Performance: With good sealing, water resistance, oil resistance, anti-aging, insulation, nontoxic, tasteless, etc 5. ...