Rubber and plastic products all have the concept of aging, and compared with other rubbers, silicone rubber products have outstanding aging performance. However, they are also vulnerable to the damage of time and environment, as well as the coverage of their application scope. Currently, the aging life of silicone gaskets is gradually attracting the attention of consumers. Everyone knows that once silicone rubber gaskets age and lose their life, it may bring great impact and trouble, and replacement and disassembly are particularly troublesome, especially in the mechanical industry. However, how to improve the service life of silicone rubber sheets has become a problem.



Environmental impact of use
During use, many silicone rubber products will gradually age and improve due to strength issues. The main reason for the impact of force is deformation caused by long-term compression and damage caused by excessive force. In the mechanical industry, a product needs to be used in one link for decades, such as the O-ring on a silicone oil press, which is subjected to long-term force friction and belongs to an oil seal. After prolonged use, its performance gradually begins to disappear.


Temperature influence
Although silicone products can withstand high and low temperatures normally, long-term exposure to temperature can still have a certain impact on silicone gaskets. If the hardness of the silicone rubber raw material is low and the melting point of the backing material is low, when the temperature rises and the backing material approaches the temperature conversion effect, the plastic flow of the backing material increases, leading to the dissolution of the backing material during demolding. Unlike backing materials, the key problem with silicone rubber materials is thermal oxidation and high-temperature decomposition, which leads to a decrease in the strength of the silicone rubber material.

Liquid influence
In the case of oil, the performance of silicone rubber cannot achieve the specified oil resistance effect of rubber. If silicone rubber is used normally in water for a long time, it can be used for more than five to ten years if it is in a static state without any impact. However, in a moving state, if silicone rubber gaskets are subjected to oil or water stress, the density of water is definitely lower than that of silicone. Therefore, during the movement, the strength of silicone molecular chains will be reduced by water or oil under stress. Therefore, it is not recommended to use it in liquid state in a moving state.


The impact of materials and finished products
The quality of materials is the main influence. Due to the different raw material formulas and characteristics of different silicone product manufacturers, there may be differences in the use of silicone gaskets made of different materials in the same place. Therefore, material selection, performance, and testing certification are still important. The quality issue of finished products is certainly important. For the aging problem of silicone products, controlling the time and temperature during the product processing can control the actual softness and brittleness hardness of the product. After the difference in hardness and softness, the aging life of silicone rubber gaskets under stress is likely to be accelerated.

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