What is the material of the gearbox repair kit?

The gearbox repair kit is made of sealing rings, oil seals, plastic gaskets, paper pads, friction plates, and steel plates. Gearbox, one of the auto parts, is a device that changes the speed ratio and direction of motion. It is used in automobiles, tractors, ships, machine tools and various machines to change the transmission from the driving shaft to the driven shaft according to different working conditions. Torque, speed and direction of motion.