Seal replacement can restore performance when leakage is caused by worn sealing elements, but safe disassembly and correct diagnosis are essential.
Safety First
Isolate the machine, support suspended loads, release stored hydraulic pressure and follow the equipment manufacturer’s lockout procedures. Hydraulic systems can retain dangerous energy even after the pump is stopped.
Inspect Before Ordering Seals
- Identify the cylinder and seal arrangement
- Check the rod for scoring or corrosion
- Inspect the barrel, guides and bearing surfaces
- Look for contamination or misalignment
- Confirm fluid and temperature compatibility
Replacement Workflow
Clean the exterior, document orientation, disassemble with suitable tools, inspect components, install compatible seals without damage, lubricate as specified, reassemble and test under controlled conditions.
When Seals Are Not the Only Problem
Repeated seal failure may indicate rod damage, barrel wear, side load, contamination, pressure spikes, incorrect guidance or an unsuitable seal material. Correct the cause before returning the cylinder to service.
Need a project-specific review? Use the RFQ form to share the application, dimensions, pressure, quantity and drawing.