The helically wound tensile cords are engineered, twisted and chemically set stranded fiberglass material.
. 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. Timing Belt, 5M, 9 x 450mm PL, T90 D&D DURA-SYNC TORQUE belts meet or exceed USA RMA published ratings levels.Timing Belt, 5M, 9 x 450mm PL, T90 They are manufactured to perform at identical or higher levels than all major US Manufacturerâs belts of the same type.