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2022

Performance and Principle of Imported Large Size Sealing Ring

The performance of imported large-size sealing ring directly affects its sealing effect and service life. The better the performance of the imported large-size sealing ring, the better the sealing effect and the longer the service life. The performance of the sealing ring essentially reflects the strength of its sealing performance. Under standard conditions, the axial or radial compression of the working conditions gives the sealing ring a certain degree of sealing. The performance advantages of high-quality imported large-size sealing rings are mainly manifested from these points:

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ImportsLarge size seal ringThe performance directly affects its sealing effect and service life. The better the performance of the imported large-size sealing ring, the better the sealing effect and the longer the service life. The performance of the sealing ring essentially reflects the strength of its sealing performance. Under standard conditions, the axial or radial compression of the working conditions gives the sealing ring a certain degree of sealing. The performance advantages of high-quality imported large-size sealing rings are mainly manifested from these points:

① From the material point of view, the rubber has good resilience and can strengthen the sealing effect on one side.

②It can meet certain mechanical strength, such as expansion strength, tear strength, deformation strength, etc., There is a certain resistance advantage to mechanical strength.

In general, the O-ring performance is stable. In most media, it is not easy to expand, its thermal shrinkage is small, it does not corrode the contact surface, and does not pollute the media. O-ring because of its effective use of the environment, the advantage is more and more obvious.

The process is simple, easy to process and form, and can maintain a relatively stable precision size to meet the corresponding working conditions.

⑤ Imported large-size sealing ring materials have high performance stability, such as the wear resistance and oil resistance of nitrile rubber, the high temperature resistance of fluorine rubber, the strong acid and alkali of ethylene propylene rubber, the non-toxic and waterproof of silica gel, and the high pressure hydrolysis resistance of polyurethane rubber, etc. All have certain representativeness, can give full play to their respective performance and characteristics, and can better meet the requirements of sealing performance.

Imported large-size sealing ring is a better sealing form in rubber seals, with simple process, short molding cycle, high quality performance and reliable sealing effect. It is the advantage of importing large-size sealing rings as the current popular sealing elements. From the sealing principle, the imported large-size sealing ring is a kind of seal that can be sealed in both directions. When installed in various mounting grooves, its radial or axial pre-compression makes the O-ring itself have the initial sealing ability. If the pressure of the working medium drops to "zero", the deformation will return to the original compression state during installation, thereby effectively sealing oil, water, air, gas and various chemical media. In essence, the imported large-size sealing ring itself has a sealing effect, regardless of the pressure strength. From the perspective of external working conditions, the small deformation of the sealing ring caused by the working pressure gives it a certain sealing ability. When the external pressure changes, the imported large-size sealing ring needs to be restored to the original compression state due to its own elasticity, forming a secondary elastic sealing effect. Its own sealing characteristics and external sealing system demonstrate the existence and superiority of the sealing performance of the sealing ring from the inside to the outside. Under the corresponding sealing conditions, we should start from the sealing principle and stand in the angle of material hardness and attribute pressure.

Key words:

Large size seal