Hydraulic cylinder seals deteriorate over time due to many factors, and knowing the most common reasons behind this deterioration is vital for maintaining the performance and longevity of any hydraulic cylinder and the hydraulic system to your machine. Factors that contribute to seal deterioration include: environmental conditions, pressures, temperature exposure, and sealing materials.
When a hydraulic cylinder is showing first signs of seal deterioration, such as leaks and loss of efficiency, then the best thing is to start planning to have it resealed.
It is not uncommon for operators to ‘push’ the machine further and to work it longer – and even ignoring any signs altogether!
Ways Hydraulic seals can deteriorate and fail
1. Extrusion: This occurs when high pressure forces the seal material to deform or extrude into gaps or clearances in the cylinder, compromising its integrity and sealing performance.
2. Compression Set: Over time, seals may lose their ability to return to their original shape after being compressed, ending up permanently deformed and loss of effectiveness.
3. Hardening and Cracking: Exposure to heat or extreme temperature, chemicals, or UV exposure can cause the seals to harden and become brittle, eventually leading to cracking or breakage.
4. Swelling: Some hydraulic fluids may cause seals to swell or expand, affecting its housing fit and sealing ability.
5. Contamination: Normal wear from repetitive motion is accelerated when contaminants, such as dust or abrasive particles, enter the hydraulic system and come into contact with the seals.
When a hydraulic cylinder is showing first signs of seal deterioration, such as leaks and loss of efficiency, then the best thing is to start planning to have it resealed.
Why You Shouldn't Neglect These Signs
Taking lightly any signs of hydraulic cylinder seal deterioration can have serious consequences. When seals start to deteriorate, they aren’t doing what their functions are for: sealing, guiding, wiping, and protecting.
Leaking and bypassing seals leads to poor efficiency and the high risk of damage to the hydraulic system. The final result of neglect can be an expensive catastrophic failure to the hydraulic cylinder and system.
The best solution for hydraulic cylinder seal deterioration is to get it serviced. Inspect seals often for signs of leakage or damage. Seals must be replaced at the first sign of deterioration to prevent more problems. Use only high-quality seals that’s specific for the hydraulic system and following proper maintenance and operating practices, such as keeping hydraulic fluid clean and within recommended temperature and pressure limits, can help extend the life of seals.
What To Do Next
For all your hydraulic cylinder enquiries and servicing call us on 07 3800 8721 and a friendly team member will help you get the the best solution.
Written by The A1HE Team
Date: 5.10.2023
