What is the reason for the aging of the seal ring?

Sealing ring aging is a complex process involving the interaction of many factors. The following are some of the main causes of seal aging:

High temperature effects:

High temperature is one of the main causes of sealing ring aging. When the seal ring is exposed to high temperatures, its material hardens and loses its elasticity, making it impossible to effectively maintain its original shape and function.

High temperatures can also accelerate the oxidation reaction in the material, leading to the decomposition and aging of the material. For example, in a hot kettle, the sealing ring is exposed to a high temperature environment for a long time, which accelerates its aging process.

Low temperature environment:

At extremely low temperatures, the seal may become weak and lose elasticity, easily damaged or torn, and cannot effectively maintain its original shape and function.

Chemical medium action:

When the sealing ring is in contact with the chemical medium, a series of chemical reactions will occur, leading to aging. Oxidation, for example, causes the material to harden, become brittle and lose its elasticity.

Acid alkaline, corrosive and solvent-based chemical media will cause varying degrees of damage to the sealing ring and accelerate its aging process.

Mechanical stress:

The seal ring is under pressure during use, and if the pressure exceeds its design range, it may lead to failure or damage.

In the process of cyclic loading and deformation of the sealing ring for a long time, the material will appear small cracks and deformation, and then reduce its performance. This fatigue damage will reduce the resilience and resilience of the sealing ring, thereby reducing its sealing performance.

Friction and wear:

When the sealing ring is in contact with other components, friction occurs between them. If the friction is too large or for too long, it may cause the surface of the seal to wear or scratch, and eventually lead to aging.

Improper material selection:

The selection of unsuitable materials may also lead to the aging of the seal ring. For example, some materials may not be able to withstand high or low temperatures under certain environmental conditions, thus accelerating their aging process.

Radiation aging:

If the sealing ring is irradiated by a radiation source (such as ultraviolet light, etc.), the molecular structure of its material will change, leading to aging. In particular, seals used in high-radiation environments such as space and aerospace are more susceptible to the effects of radiation aging.

Humidity and moisture:

The wet environment and the moisture that may remain during the use of the seal can accelerate the aging process of the seal.

To sum up, the aging of the seal ring is the result of a variety of factors. In order to extend the service life of the seal ring and maintain its stable performance, it is necessary to consider the above factors, and take appropriate measures for prevention and maintenance.

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