The coupling is made of engineering plastics as an elastic element. It is suitable for connecting two coaxial transmission shafts. It has the properties of compensating for the relative deviation of the two shafts, cushioning, shock absorption, and wear resistance. It is suitable for general occasions and transmits torque of 20-35000. .NM, working temperature -35-+80 degrees Celsius and interchangeable with German ROTEX coupling.