... , NBR, SI, EPDM, ACM,PU, SBR, CR, BR, IIR, NR, IR, etc, just as your request. 2. Hardness: between 30-90 ... . Performance: Heat resistant, oxidation resistant, oil proof, chemical resistant, anti-corrosion, flame resistant, ozone resistant, weather proof, radiation resistant,etc. 5. Color,size ...