MasterDrive 1000-8M-85 8M Pitch H Series Timing Belt 1000-8M-85 HTD timing / synchronous belts are the third generation of high capacity industrial belts offering reliable, trouble-free and economical alternative to chain drives. Compared to chain drives these belts are cleaner, quitter, lower in cost and lubrication-free. They feature an engineered HTD-type tooth profile providing high performance. The belts feature high temperature chloroprene polymer throughout. The helically wound tensile cords are specially engineered, twisted and chemically set stranded fiberglass material.The high performance, woven, nylon based, fabric facing material has been engineered and tested for highly wear resistant performance. The backing is precision ground for smooth uniform running.