What are the main points that affect the long-term non-deformation of the O-ring?

1. Normalized value of O-ring raw materials
Because the O-rings produced by different companies have different shrinkage and stretch. In the case of long-term shrinkage of the product, the stress relaxation can be caused to shrink, and with the change of time, it will cause insufficient elasticity and lead to leakage.

2. Temperature leads to accelerated embrittlement of O-rings
In order to fully utilize the performance of O-rings, it is necessary to use raw materials that are applicable to the standards of the work. Whether it is nitrile rubber, silicone or fluorine rubber such raw materials. In the case of application, there are different temperature limits, and if the selection is not appropriate, the product is deformed at high temperature for a long time and cannot repair the ductility, or the deformation in the ultra-low temperature range cannot ensure sealing. It is necessary to take into account the temperature of the office environment in the original design. Most O-rings are affected by various factors such as sealing substances, application standards, and specified performance in the application temperature range.

3. The material pressure causes the O-ring to deform
In the case of selecting O-rings, in addition to the selection of application temperature and sealing material, it is also necessary to fully consider whether the retaining ring must be used according to the pressure in the work. The key function of the retaining ring is to avoid the O-ring. Extrusion, when two opposite directions are applied, the two retaining rings can relieve the working pressure. There are three types of retaining rings: wound, bevel, and spiral.