How PU Oil Seals Improve Hydraulic Cylinder Service Life Under High Pressure
PU oil seals are sealing components made from polyurethane that create a barrier between the hydraulic cylinder and the external environment. Their flexibility and toughness help them withstand high pressure and seal lubricants effectively.
PU oil seals offer several advantages compared to traditional rubber seals, including:
Higher resistance to wear and tear.
Better sealing properties under high pressure.
Enhanced temperature resistance.
When selecting a PU oil seal, consider the following specifications:
Pressure Rating: Ensure the seal can handle the hydraulic system\'s operating pressure.
Temperature Range: Check the operational temperature range of the PU seal.
Size and Fit: Measure the hydraulic cylinder dimensions to choose a compatible seal size.
Here’s a list of tools you will need:
Torque wrench
Seal replacement tool or seal driver
Cleaning cloths
Lubricant for installation
Clean your work area thoroughly to avoid contaminating the hydraulic system during installation.
Carefully disassemble the hydraulic cylinder and remove the old oil seal using a seal removal tool. Ensure not to damage the cylinder surfaces.
Inspect the new PU oil seal for any defects and apply a thin layer of compatible lubricant around it to facilitate installation.
Use a seal driver to evenly press the new PU oil seal into place, ensuring that it sits correctly in the groove without any tilting or misalignment.
Carefully put the hydraulic cylinder back together, making sure all components are fitted correctly and securely.
Check the alignment of the seal to avoid premature failure. Misaligned seals can lead to leaks.
Using incompatible lubricants can degrade PU material. Always use lubricants that are suitable for PU seals.
PU oil seals contribute to the longevity of hydraulic cylinders by providing reliable sealing performance under high pressure, significantly reducing maintenance needs and costs.
Maintaining the integrity of the hydraulic system leads to improved efficiency and reduces energy loss, allowing for more effective operation of machinery.
In conclusion, investing in high-quality PU oil seals from Dingtong ensures enhanced performance and longevity of your hydraulic cylinders under high-pressure conditions.

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Xingtai Dingtong Rubber is a professional products co., Ltd. production and sales of seals enterprises. Founded in 1996, it covers an area of 23,300 square meters, 26 machines, and 3200 kinds of molds. Our products are often exported to North America, Asia, Europe, Northern Europe, Southeast Asia, South Asia, Asia, South America, Africa.
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