CATEngine Parts

376-9011 Hydraulic Cylinder Seal Kit — Cat 3306 C13

This is a hydraulic cylinder seal kit designed to replace worn or leaking seals within the hydraulic system. It ensures proper sealing to maintain hydraulic pressure and prevent fluid contamination, meeting stringent CAT performance standards. Failure of these seals often presents as slow or jerky hydraulic movements, external fluid leaks, or a loss of lifting/actuating force.

Hydraulic Cylinder Seal Kit – Part No 376-9011 – 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, metal
ApplicationHydraulic cylinder sealing
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of seal failure is often a gradual decrease in hydraulic system responsiveness or visible external fluid leakage around the cylinder rod. If ignored, internal leakage will worsen, leading to slower cycle times and reduced power, potentially compromising the machine's operational capability.

Installation Tip

Ensure all cylinder components are meticulously cleaned before assembly to prevent debris from damaging the new seals. Avoid using sharp tools that could scratch or nick the sealing surfaces during installation.

Service Note

Inspect the cylinder rod for scoring and the cylinder bore for damage; clean all internal components thoroughly before reassembly.