Three main reasons for premature failure of hydraulic cylinder seals

These are some of the reasons why hydraulic seals fail and what you can do to prevent them from failing.

1. your seal is not installed correctly:

Correct and professional installation of hydraulic seals is the key factor to prevent premature failure of seals. When you or a technician places a seal anywhere on the hydraulic cylinder, several steps must be followed to ensure a successful installation.

First, you must select the correct type of hydraulic seal for your system. The wrong seal type cannot cope with the pressure of the system and will fail quickly. In the worst case, the wrong seal type cannot be used at all, and you will immediately encounter a hydraulic leak on your hands.

Other problems may occur during the installation of the seal, such as contamination and damage caused by improper handling. The seals need proper lubrication during installation and require correct orientation. When you look at certain types of hydraulic seals, you may not notice it, but you can install them upside down, which may also cause early failure.

If not installed correctly, hydraulic seals will also wear out quickly and fail faster. For example, overtightening the seal can cause as many problems as undertightening the seal.

2. your seals are contaminated:

When contaminants seep into the hydraulic system, the contaminants will also begin to infect the hydraulic cylinder seals. In some cases, certain types of debris can collect around the seal. The more contaminants build up around the seal, the lower the efficiency and accuracy of the seal.

Since the contaminants come from outside the system, the best way to keep them away from the seals is usually to exclude them from the hydraulic system. In general, you can tell if contamination is the cause of premature seal failure. If you find tiny debris embedded in the seal, you will know that pollution is at work.

To prevent contamination from specifically damaging the seal, you should:

1) Periodic circulation of the fluid in the system;

2) Keep the piston area free of accumulation;

3) Make sure to filter the hydraulic oil;

4) Install the wiper.

You may not be able to eliminate all pollution in the system, but the more pollution you keep, the longer the service life of all hydraulic components.

3. your seal cannot absorb heat or liquid:

Hot corrosion of hydraulic seals occurs when the hydraulic seals simply cannot absorb the heat and friction of the hydraulic system. The seal will melt, become brittle and crack. Dealing with thermal erosion and degradation requires an understanding of the operating parameters of the system. Your seal may not have system tolerances.

In this case, you can upgrade to a seal made of a material with higher heat resistance. You can also try to increase the amount of lubrication used in the system.

If your hydraulic system uses chemicals that the seal cannot handle, the seal may also corrode and degrade. Chemical damage to hydraulic seals can take many forms.

Depending on the interaction between the chemical and the seal material, you will find that the seal will soften, shrink, swell or change color. The best solution to chemical degradation is to replace the seal with a seal made of a material more suitable for the system application.

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