Material: Rubber or polyurethaneRubber timing belts, PU timing belts, cogged belt, ribbed belts, v-belts, sewing machine belt, open end belt, other conveyors belt, pulley, and some rubber/PU products.T, htd. Std, double sideMxl, XL, L, h, xh, t2.5, t5, t10,3m,4.5m,5m,8m,14m, at5, at10Heat, oil, chemical and abrasion resistant