Analysis of common problems in the selection of hydraulic transition joint seals

Oct 27,2022 / BY DEVELOPERS
The structural characteristics of hydraulic seals determine their performance characteristics
Hydraulic seals are mainly O-rings, annular seals and square seals, etc., which makes the custom welded pipe joints have the advantages of simple structure, easy production and low cost, so they are used in the hydraulic transmission system. Dynamic sealing parts and packing sealing components. It is precisely because of those structural features that their performance characteristics are cast.
1. The liquid chemical substances inside are not easy to leak, and it has excellent airtightness. Even in harsh environments such as high pressure and high temperature, the leakage of custom inch hydraulic joints does not increase significantly.
2. Has excellent compatibility. Because hydraulic seals are immersed in oil for a long time, it is very easy to solubilize, melt or become embrittled and harden, which makes them lack the sealing effect. Therefore, hydraulic seals are required to have excellent compatibility with gear oil.

3. Has the advantage of low sliding friction. In order to prevent or reduce potential safety hazards such as low-voltage creeping caused by hydraulic machinery, custom welded pipe joints require hydraulic seals to have low static friction and dynamic friction, and their friction resistance should be very stable. The connector has the function of connecting. For different applications, the methods of connecting them are different: the three parts of the metal bellows, the plastic mesh bag and the connector are connected by electric welding, which is called welding; connected by mechanical equipment clamping, It is called the mechanical equipment clamping type. In addition, there are also the above two types of liquid-quality methods, which are called hybrid teaching.
Metal bellows products include oil suction hoses, steam hoses, sandblasting hoses, strong acid and alkali delivery hoses, food hoses, oxygen blowing hoses and various special-shaped hoses. Widely used in machinery and equipment, chemical plants, crude oil, metallurgical industry, food and other fields.