The helically wound tensile cords are engineered, twisted and chemically set stranded fiberglass material.
They are manufactured with a heavy duty, woven, nylon based fabric tooth covering.Timing Belt, 5M, 15 x 625mm PL, T125 They are manufactured to perform at identical or higher levels than all major US Manufacturerâs belts of the same type. All DURA-SYNC TORQUE timing belts are manufactured using the latest in synchronous belt technology. They are made with a high temperature chloroprene polymer throughout the belt, and are proven through thousands of hours of customer use to be durable and dependable.