silicone gasket: 1. Ozone proof rubber seal 2. Good insulation property 3.Certifiication ISO 9001: 2008,ROHS silicone gasket:1. Materials: NBR, SI, HNBR ,ACM ,SBR ,FPM ,CR ,BR, IIR ,NR ,IR PU etc, just as your request.2. Temperature ranqe: -100-260 celsius degrees3. Hardness: between 30-90 shore A or IRHD4. Color: black, transparent, green, red, yellow, etc5. Certifications: all manufacturing ...