CATEngine Parts

370-1940 Bucket Cylinder Seal Kit — Cat C18 C13

This bucket cylinder seal kit provides all necessary seals and O-rings to rebuild a hydraulic cylinder, ensuring proper sealing and preventing fluid leaks. Manufactured with high-quality materials that resist wear and hydraulic fluid degradation, it offers superior performance over worn or cracked seals. Operators will typically notice hydraulic fluid leaks around the cylinder rod, sluggish cylinder movement, or a loss of lifting/digging power when this seal kit is needed.

Bucket Cylinder Seal Kit – Part No 370-1940 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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, polyurethane, and acetal
ApplicationBucket hydraulic cylinder
Service LifeReplace as needed during cylinder overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The primary symptom of failing cylinder seals is visible hydraulic fluid leakage around the cylinder rod or barrel. If left unaddressed, the leakage will increase, leading to a loss of hydraulic pressure and power, making the equipment less effective. Continued operation with leaking seals can result in internal cylinder damage and contamination of the hydraulic system.

Installation Tip

Thoroughly clean the cylinder bore and rod before installing new seals to prevent damage from debris. Ensure all seals are properly seated and lubricated with system hydraulic fluid to prevent tearing during installation.

Service Note

Inspect the cylinder barrel and rod for scoring or wear, and check the hydraulic fluid reservoir for contamination when replacing the bucket cylinder seal kit.