CATEngine Parts

2519845 Boom Cylinder Seal Kit — Cat 3408 3516

This is a comprehensive seal kit designed to rebuild the primary cylinder responsible for the boom's lifting and lowering motion on Caterpillar equipment. It contains all necessary seals, O-rings, and backup rings to restore the cylinder's hydraulic integrity and prevent internal or external leakage. A worn or damaged seal kit will manifest as slow boom operation, external fluid leaks from the cylinder rod, or a loss of hydraulic pressure, compromising machine performance.

Boom Cylinder Seal Kit – Part No 2519845 – 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, Polyurethane, PTFE
ApplicationBoom Cylinder
Service LifeReplace as needed based on cylinder performance and leakage
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing boom cylinder seal kit include slow or jerky boom movements and visible hydraulic fluid leaks around the cylinder rod. If left unaddressed, internal leakage will worsen, leading to a loss of lifting capacity and potential system pressure drop. This can result in the inability to lift heavy loads or maintain boom position, impacting operational efficiency and safety.

Installation Tip

Thoroughly clean the cylinder bore and rod before installing new seals to prevent contamination and damage. Ensure all seals are properly oriented and lubricated to avoid tearing during installation.

Service Note

Inspect the cylinder rod for scoring or damage, and check the piston and gland for wear, as these issues may require additional repairs or replacement beyond just the seal kit.