CATEngine Parts

371-2737 Hydraulic Cylinder Seal Kit — Cat 242B3 252B

This hydraulic cylinder seal kit is designed to replace worn or leaking seals within the hydraulic system, ensuring proper cylinder function and preventing fluid loss. Manufactured to meet OEM quality standards, it provides a reliable seal that outperforms degraded or damaged seals. Operators may observe slow or jerky cylinder movement, external hydraulic fluid leaks, or a loss of lifting/actuation force when this kit is needed.

Hydraulic Cylinder Seal Kit – Part No 371-2737 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine 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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Part TypeHydraulic Cylinder Seal Kit
MaterialNBR Rubber, PTFE
ApplicationHydraulic Cylinder
Service LifeReplace as needed based on inspection
CompatibilityCAT 242B3, 252B, 259B3, 259D, 279C, 287C
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing seal kit is often visible hydraulic fluid leakage around the cylinder rod or a spongy response from the cylinder. If ignored, the cylinder may lose its lifting or actuation force, and internal contamination can occur. Continued operation with leaking seals can lead to pump damage and system overheating.

Installation Tip

Carefully clean the cylinder bore and rod to remove any debris or old seal material before installing the new seals. Avoid using sharp tools that could scratch or nick the new seals during insertion.

Service Note

Inspect the cylinder rod for scoring or damage and clean the hydraulic fluid reservoir when replacing the cylinder seal kit.