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Description / Abstract:
The material defined by these specifications is a toothed drive belt based on 80 IRHD Hydrogenated Nitrile rubber (HNBR) with a double layer of polyamide facing fabric and glass fiber tension cords. The belt is suitable for use where average service temperatures up to 125 °C and peak service temperatures up to 140 °C are experienced. The belt is oil and water resistant and remains flexible down to -40 °C. The glass tension cords of -A4 belts are modified to improve hydrolysis resistance after prolonged water exposure.