CATHydraulic Parts

178-5549 178-5549 — Cat

This component is a specialized seal designed to prevent the leakage of fluids and contaminants within critical Caterpillar equipment systems, such as hydraulics or transmissions. It is manufactured to meet stringent OEM material and dimensional standards, ensuring superior sealing performance compared to worn or damaged seals that allow fluid loss and ingress of debris. Operators may observe fluid leaks around the component, unusual system noises, or a gradual decrease in system efficiency when this seal begins to fail.

178-5549 – Part No 178-5549 – CAT Spare Part
Part Specifications
BrandCAT
CategorySpare Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeSeal
MaterialRubber and metal composite
ApplicationHydraulic or transmission system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure may include slight fluid seepage around the seal. If left unaddressed, the leak will likely worsen, leading to significant fluid loss and potential contamination of the system. Continued operation with a failed seal risks damage to pumps, bearings, or other precision components.

Installation Tip

Ensure the seal groove and mating surfaces are thoroughly cleaned of any old sealant, debris, or burrs before installation. Avoid using excessive force or sharp tools, which can easily nick or damage the seal lip during insertion.

Service Note

Inspect the shaft or bore for any signs of wear, scoring, or damage that could compromise the new seal's performance.