The types of seals used in the four-column hydraulic press depend on a range of factors. Only by selecting the most suitable seals according to certain technical standards you can maximum use effect. Therefore, the selection of mechanical seals with different structural types and materials should be according to specific uses.
The main technical parameters for the selection of hydraulic seals are: sealing cavity pressure (MPa), fluid temperature (°C), working speed (m/s), fluid characteristics, as well as effective space for sealing installation.
The basic principles to follow are:
- According to the pressure of the sealing cavity. This determines whether the sealing structure is balanced or unbalanced, single-end or double-end, etc.
- According to the working speed. Determine whether to use rotary or static, hydrodynamic or non-contact.
- According to the temperature and fluid properties. Determine the friction pair and auxiliary sealing materials, and correctly select the lubrication, flushing, heat preservation, cooling, and other mechanical seal circulation protection systems.
- According to the effective space of the installation seal, determined by using multiple springs or single springs or wave springs, built-in or external.
You can obtain the best results by selecting mechanical seals strictly in accordance with the above selection criteria. Therefore, you can only achieve effective sealing through the process of mechanical movement.