PTFE Hydraulic Seals

Hydraulic seals mainly include O-rings, U-rings, Y-rings, star-shaped rings, etc., generally using polytetrafluoroethylene materials, also known as PTFE, plastic king, Teflon, is a synthetic high Molecular material, its performance is very good, high temperature resistance 250 degrees ~ 260 degrees, can reach 300 degrees in a short time, can be used for a long time at 250 degrees high temperature. The low temperature resistance is below -190 degrees, and the temperature working range is very wide. It has the characteristics of acid resistance, alkali resistance and resistance to various organic solvents. It is almost insoluble in all solvents. Its friction coefficient is extremely low, so it can be used for lubrication. The material cost is low, it is suitable for production, and the structure is simple. A material widely used in hydraulic mechanical systems for the production of dynamic and static seals. The hydraulic seal is installed in the sealing cavity, and through its self-sealing compression action, the seal will produce 10% to 25% deformation compression, which makes the sealing surface of the seal and the machine produce a high tightening force, preventing the hydraulic pressure. oil leakage. When the hydraulic machinery is working, the pressure of the hydraulic oil is transmitted to the hydraulic seal, which makes the seal deform and strengthens, and the sealing surface generates stronger pressure, thereby preventing the leakage of hydraulic oil. If the working pressure is too high above 10Mpa, a synthetic resin retaining ring must be installed on the pressure side of the seal, which can be a PTFE retaining ring, a nylon retaining ring, a polyoxymethylene retaining ring, etc., some of which can be used Higher quality imported seals. Prevent the deformation of the hydraulic seal so that a part of it squeezes into the sealing gap, and the reciprocating motion of the hydraulic cylinder will cut it off, so that the hydraulic oil leaks and causes mechanical failure.