Rubber Auto Bumper 1. Oil proof auto bumper 2. Heat resistant. 3. Wear proof. Rubber Auto bumper : 1. Materials: NBR, also ... , FPM, IIR, VT etc. 2. Characteristics: oil proof, aging resistant, heat resistant, wear resistant, chemical resistant, anti-corrosion, etc. 3. Hardness: 30~90 shore A ...