What is the effect of pressure on the sealing performance of the rotary table cylinder

The rotary table cylinder is an indispensable key component in automation equipment and industrial robots. Its sealing performance directly affects the efficiency, stability and safety of the equipment. Pressure, as an important factor affecting the sealing performance of the cylinder, has a profound impact on its working state and service life.

Basic principles of sealing performance
The sealing function of the rotary table cylinder mainly depends on the close contact between the seal and the cylinder body. The seal forms an effective contact with the cylinder wall through the applied pressure to prevent the leakage of gas or liquid. Under normal working conditions, the seal can effectively maintain the pressure inside the cylinder to ensure the reliable operation of the equipment. This process depends not only on the material properties of the seal, but also on its geometry and installation method.

Effect of pressure on seal deformation
The material properties and geometry of the seal determine its deformation ability under pressure. Under high pressure, the pressure inside the cylinder is too high, which may cause the seal to be over-extruded, resulting in irreversible shape deformation. This deformation will cause uneven contact between the seal and the cylinder wall, thereby increasing the risk of leakage. Relatively speaking, under low pressure conditions, the seal may not be able to achieve sufficient compression, resulting in a decrease in sealing effect and an increase in the possibility of gas or liquid leakage. Therefore, a reasonable pressure range is essential to ensure sealing performance.

Impact of pressure fluctuations on sealing performance
In practical applications, the working pressure of the rotary table cylinder often shows a fluctuating characteristic, and this pressure fluctuation has a significant impact on the sealing performance. Pressure transients can make it difficult for the seal to quickly adapt to the pressure changes, resulting in sealing failure in a short period of time. This situation is particularly evident in high-frequency operations, which may cause fatigue damage to the seal. Long-term pressure fluctuations can cause fatigue to the sealing material, which in turn causes problems such as cracks and aging, seriously affecting the stability of the sealing performance. Therefore, the impact of pressure fluctuations on the seal should be fully considered during design to improve its durability.

Compatibility of pressure and sealing materials
Different sealing materials have different performances when facing different pressures. When selecting sealing materials, their performance under specific pressures must be considered. For example, some materials may become brittle under high pressure, while others may exhibit excellent pressure resistance. In addition, sealing materials are prone to aging in high-pressure environments, resulting in changes in their physical properties, which in turn affects the sealing performance. Therefore, the key to improving the sealing performance of the rotary table cylinder is to reasonably select and test the compatibility of the sealing material to ensure its stability under specific working conditions.