The key component of the rotary seal is a special silicone rubber elastomer that can withstand a temperature of 204 ° C. The inner diameter of the elastomer is slightly smaller than the shaft diameter, and it has an interference fit with the shaft. This tight fit not only seals the shaft to prevent material leakage, but also rotates the internal sealing components with the shaft to avoid wear and tear. When the elastic body rotates with the shaft, it drives a pair of PTFE rotor blades to rotate, and the rotor blades move relative to the stationary inner surface of the shell to form the main sealing surface. The clamping force between the rotor blade and the inner surface prevents the material from leaking between the surfaces. CinchSeal ® The unique design of the internal components of the rotary seal rotating with the shaft has advantages over traditional packing seals and lip seals that work in direct friction with the shaft. PTFE rotor blades are relatively soft wear parts in seals and are designed as replaceable components. Seal repairs include new elastomers and PTFE rotor blades, which can be installed and replaced within minutes.