... Prompt delivery & top quality 4) Professional service. Features of our rubber products;Working temperature: -100 to +220 degrees;Hardness: 25~95 ... ;High tensile Strength, Wear and tear resistance, Durable;UL certification;Rubber Material: NBR, HNBR, XNBR, EPDM, CR, NR, SBR, VMQ, ... IIR, ACR.Please see the following features of all kinds rubber material, please choose the suitable one for your items, ...