... kind of rubber v-belt, transmission belt, v belt, auto fan belt, automotive belt, rubber belt,and so onRubber v-beltPlain v-belt: FM ... thus avoiding friction between the components.Tension rubber:A material composed of special rubber that is responsible for reducing thepossible effects ... to the pulley.Features:1) With special frames, our v-belts are resistant to heat,oil,fatigue,aging and friction2) ...