Which from following polymers is used to obtain rubber belts?

The analysis of polymer suitability indicates Buna-N is uniquely appropriate for rubber belt production.

Buna-N (Nitrile Butadiene Rubber) is a synthetic copolymer of acrylonitrile and butadiene, offering exceptional resistance to oils, fuels, and chemicals. This property profile makes it the preferred material for industrial belts operating in demanding environments, particularly conveyor and drive belts requiring oil resistance.

Other polymers lack the necessary elastomeric properties: Perspex (PMMA) is a rigid transparent thermoplastic, PVC serves primarily as a versatile plastic for construction and insulation, and polycarbonate provides impact resistance for protective applications. None exhibit the flexible, durable characteristics required for rubber belts.