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01

2023

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02

The reason why the deformation of the rotating sealing ring cannot be restored

Because the rotating sealing ring is made of viscoelastic material, after long-term use, the initial setting compression and rebound sealing ability will be deformed for a long time, the sealing performance will be gradually lost, leakage will occur, and long-term deformation will make the elastic force disappear. This is also the reason why the rotating sealing ring loses its sealing performance. Then, what is the reason why the sealing ring deformation cannot be restored?


Author:

DueRotating seal ringMade of viscoelastic materials, after long-term use, the initial setting compression and rebound sealing ability will be deformed for a long time, the sealing performance will be gradually lost, leakage will occur, and long-term deformation will make the elastic force disappear. This is also the reason why the rotating sealing ring loses its sealing performance. Then, what is the reason why the sealing ring deformation cannot be restored?

1. Working temperature, the working temperature of the rotating sealing ring is also one of the reasons that affect the deformation of the sealing ring. If the temperature is too high, the material of the sealing ring will accelerate aging. If this situation is maintained for a long time, the sealing ring will deform and cannot be restored. When the sealing ring is severely deformed, it will lose its sealing ability.

2. The pressure of the working medium, the pressure of the working medium will also cause the sealing ring to deform and cannot be restored. As the pressure resistance of modern mechanical equipment or hydraulic machinery is getting higher and higher, if the sealing ring is in a high-pressure environment for a long time, the sealing ring It will deform and cannot be restored, so when designing, choose the appropriate raw materials according to the working environment of the sealing ring. If the pressure of the working environment is large, it is also necessary to choose raw materials with high compression resistance.

3. The compression rate and tensile degree are also one of the reasons that affect the deformation of the sealing ring. The raw materials for the sealing ring will produce a relaxation phenomenon under compression, and the compression stress will decrease with the passage of time. Therefore, the compression rate and the degree of stretching will increase with the passage of time, resulting in the deterioration of the elasticity of the sealing ring and the disappearance of the sealing performance.

Because the rotating sealing ring is made of viscoelastic material, after long-term use, the initial setting compression and rebound sealing ability will be deformed for a long time, the sealing performance will be gradually lost, leakage will occur, and the long-term deformation will make the elastic force disappear, which is also the reason why the sealing ring loses its sealing performance.

Features of rotary seal ring:

1. Good dimensional stability;

2. High pressure resistance, wear resistance and high temperature resistance;

3. Resistance to most media, strong chemical resistance;

4. The installation space is small, the groove is simple, and there is a lubrication cavity;

5. A piston rod or piston is required.


Key words:

Rotating seal ring