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Oil and heat-resistant. Static dissipating. Built to European standards DIN 7753, AFNOR T47-117, BS 3790 and ISO 4184. SP series V-belts were the forerunners of the RMA deep wedge, high capacity V-belt sections. These deep-wedge belts (38°) allow for more power, high speed ratios, smaller center distances and more compact drives. They are replacement belts for many imported machines and for machinery built for export. These V-belts also have the UniMatch feature. This eliminates belt set matching with its multiple stocking problems. Non-standard lengths are available on special order. Metric V-belts are specified by letters showing the SP section and numbers giving the pitch length in millimeters. For example: SPA 850.