In sealing arrangements, friction can damage the worn O-rings and affect the sealing. The degree of wear mainly depends on the size of the static friction. When the liquid pressure is small, the friction size of the O-ring depends on its compression shrinkage. When the working fluid is under pressure, as the pressure of the delivery line increases, the frictional force increases. In the case of working pressure less than 20MPa, approximate linear relationship. When the pressure is greater than 20MPa, the pressure effect, the increase of the contact area between china O-ring custom and the metal gradually slows down, and the friction force will increase accordingly.

In general, the service life of china O-ring custom becomes tight with the increase of hydraulic pressure, and the pressure of the conveying pipeline is strictly controlled. The increase in friction during installation results in high frictional heat between the installation rotation and the O-ring. Since most china O-ring custom is made of rubber material, the thermal conductivity is extremely poor. Therefore, the frictional heat will cause the aging of the rubber, resulting in the loss of the china O-ring custom seal. Friction can also cause damage to the surface of the china O-ring custom, reducing the amount of compression. Severe friction can damage the surface of the O-ring, and the loss of the seal can affect the safety of the pipeline. So friction will seriously affect the china O-ring custom seal.