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How to replace seals in a hydraulic cylinder

2026-01-28 11:14:57
How to replace seals in a hydraulic cylinder

Changing out the seals on a hydraulic cylinder, we have to admit, is not easy for many people. If there is a machine with hydraulic cylinders in use, such as tractors and excavators, you need to ensure that they are maintained properly. By maintaining proper seals, hydraulic fluid can be kept in place and your machine operating smoothly. If there are leaks, or the machine isn’t working properly, you might be ready replace those seals. This article, coupled with tips from Junfu hydraulic will help you understand how this can be effectively done. 

Some of the Common problems occurred in Replacing Seals of Hydraulic Cylinders 

There are a number of issues you might encounter when replacing seals in your hydraulic cylinders. One common mistake is getting the incorrect size seal. Seals can be highly variable in both size and type, and using the wrong one will cause a leak, not solve the problem you’re dealing with. Just make sure to measure the cylinder before purchasing new seals. Additionally, the cylinder surface is also problematic. New seals might not help if the surface is scratched or damaged. It’s analogous to attempting to close a jar that has a bumpy surface; it will not cannot. Always examine the cylinder for nicks or other imperfections and smooth them, if necessary, before inserting new seals. 

What Signs to Look for to Determine Whether Hydraulic Cylinder Seals Need Replacing? 

Always pay attention to these notices; they’ll save you headaches later. If inspectors are not keeping an eye out for these issues, the problems might be detected too late. Set up a cadence of checking your gear. As good practice, you should always examine the seals and cylinder closely. When your seals are old or you don’t know when they were last changed, it is probably a good idea to swap them out. Strike before there’s a breakdown. By monitoring your custom hydraulic cylinders, you can maintain their peak performance and longevity, keeping both your machine and your work dependent. 

It is very important to change seals within hydraulic cylinders regularly. 

If a seal malfunctions, it can cause accidents or equipment to fail and risk harming workers. If you stay on top of replacing those seals, you’re taking care of safety and ­ensuring that people are safe while ­operating the equipment. Additionally, while you’re replacing the seals, you can also check on other parts of the heavy duty hydraulic cylinder for damage. You can use this to catch small problems before they become big ones, which will save you time and money down the line. Routine maintenance, which can include seals, may prolong a piece of equipment’s useful life. Here at Junfu Hydraulic, we advise that seals should just be checked and replaced regularly to make sure everything is in good running order. 

How to replace seals in a hydraulic cylinder? 

When you replace hydraulic cylinder seals, you’ll want to make sure they fit just right and one can accomplish this by following some steps. The first step is to measure the dimensions of the old seals. This involves merely being aware of the diameter and thickness characteristics of the seals. Measure twice for this one, with a ruler or measuring tape. Junfu Hydraulic offers seal kits that include seals of the proper size, which can make the process easier to navigate. When taking measurements of the old seals, look for any numbers or marking that might exist on them.