Rubber seals are usually in a compressed state. Due to the viscoelasticity of rubber materials, the pressure will decrease with time, which is manifested as relaxation of compressive stress;

Generally, it can be done under the condition of normal temperature and ventilation. Of course, if possible, the storage temperature is lower than 25 ° C, preferably lower than 15 ° C. When the temperature exceeds 25 ℃, some forms of damage may be

The section of Y-shaped seal ring is Y-shaped, which is a typical lip seal ring. It is widely used in reciprocating sealing devices,