▎ 摘　　要

NOVELTY - An elastomeric composition comprises at least one elastomer, which is heat-resistant for 70 hours at 100 degrees C, at least one graphene material in amount of 0.01-30 pcc with respect to elastomer, and at least one carbon black in amount of 15-150 pcc with respect to elastomer. The elastomer has durometer hardness variation of 15 or less, variation in tensile strength of 40% or less and variation in breakage elongation of 40% or less. USE - Elastomeric composition for articles e.g. O-ring, sealing material, seal, diaphragm, valve, hydraulic seal, inflated packing seals, oil-resistant pipe liner, wiring harness, battery cable, turbo hose, air duct, brake, cable gland, hydraulic hose, radiator hose, transmission seal, engine bracket, chassis vibration bracket, constant velocity joint bellow and fuel system component (all claimed). ADVANTAGE - The elastomeric composition has desired viscosity, and provides article having excellent heat resistance and mechanical characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of elastomeric composition, which involves uniformly mixing the elastomer, graphene material and carbon black.