Import rubber o-rings production factory When choosing a seal, we must first consider its tensile strength, tensile stress, elongation, elongation at break, permanent set at break, and stress- strain curve, etc. These are collectively referred to as tensile strength.

　　Besides, Import rubber o-rings production factory also needs to consider the basic performance of stamp hardness. Hardness expresses the ability of rubber to resist external pressure. The hardness of rubber is partly related to other properties.

　　As we all know, the choice of O-ring material is of great significance to its sealing performance and service life. The performance of the material directly affects the performance of the O-ring. Import rubber o-rings production factory believes that in addition to the general requirements for sealing ring materials, O-rings should also pay attention to the following conditions:

　　(1) Rich in elasticity and resilience; (2) Appropriate mechanical strength, including expansion strength, elongation and tear strength, etc.; (3) Stable performance, not easy to swell in the medium, thermal shrinkage effect (Joule effect) (4) It is easy to process and form, and can maintain precise dimensions; (5) It does not corrode the contact surface and does not pollute the medium.

　　The most suitable and commonly used material to meet the above requirements is rubber, so O-rings are mostly made of rubber materials. There are many varieties of rubber, and new varieties of rubber appear constantly. When designing and selecting Import rubber o-rings production factory, it is necessary to understand the characteristics of various rubbers and make reasonable choices.