Most are endless and their cross section is trapezoidal or “V” shaped. The “V” shape of the belt tracks in a similarly shaped groove on a pulley or sheave. The v-belt wedges into the groove as the load increases creating power distribution and torque.The durability of new oil resistance V-Belt contributes to longer life.

　　oil resistance V-Belt also ensures higher than average resistance to repeated reverse flexing and high resistance to oil, heat and cracking.Oil resistance V-Belts are commonly made of rubber or polymer or there may be fibers embedded for added strength and reinforcement.