What are the main points that cause the O-ring to not deform for a long time?

1. The normalized value of O-ring raw materials
Because the O-rings produced by different companies are different in shrinkage and tension. In the case of long-term shrinkage, the product can cause reduced stress relaxation, and with the change of time, it will cause insufficient elasticity and lead to leakage.

2. Temperature causes O-ring embrittlement to accelerate
To give full play to the performance of O-rings, it is necessary to use raw materials that are applicable to working standards. Whether it is a raw material such as nitrile rubber, silicone rubber or fluorine rubber. In the case of application, there are different temperature limits. If the selection is not appropriate, the product will not be able to repair the ductility due to the deformation of the product in the high temperature for a long time, or the deformation in the ultra-low temperature range will not be able to ensure the seal. It is necessary to consider the temperature of the office environment in the original design. Most O-rings are affected by various factors such as sealing materials, application standards, and specified performance in the application temperature range.

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