The sealing effect of the O-ring is obtained by extrusion, but in many cases this deformation is permanent, so what is the cause of the permanent deformation of the O-ring?
1. Compression and stretching: The compression stress of the O-ring under long-term compression will become relaxed, so insufficient elasticity will cause deformation and lead to leakage;
2. Temperature: For ordinary rubber O-rings, the aging will be accelerated in a high temperature environment for a long time, and its elasticity will be slowly lost in the process, resulting in permanent deformation;
3. Quality working pressure: O-rings will produce serious irreversible deformation when they work under a large hydraulic medium pressure for a long time. Therefore, in the face of different media, we must consider its working pressure and choose O-rings of different materials. .