CATEngine Parts

2590633 Hydraulic Cylinder Seal Kit — Cat 3066 3126

This hydraulic cylinder seal kit is essential for maintaining the integrity of hydraulic cylinders, preventing fluid leaks and ensuring proper system pressure. Manufactured to meet OEM specifications, it provides a reliable seal, unlike worn or damaged seals that lead to gradual hydraulic fluid loss and reduced cylinder performance. Operators may notice slow or jerky cylinder movement, external fluid leaks, or a loss of hydraulic system power when this kit is needed.

Hydraulic Cylinder Seal Kit – Part No 2590633 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

src="/assets/js/product-page.js">

Related CAT Parts

From the same category — may also be needed

6N4221lK
Engine Parts Component
067-6228-3i-1615
Lube Filter
1265875
Flywheel As
2s1273
Engine Parts Component
CtP3054008
CTP Engine Repair Kit
096-5931
Main Relief Valve

Browse all CAT Engine Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 and PTFE
ApplicationHydraulic Cylinder
Service LifeReplace based on inspection and leakage
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of failing hydraulic cylinder seals is typically visible external fluid leakage around the cylinder rod or gland. If ignored, this leakage will worsen, leading to a gradual loss of hydraulic pressure and sluggish or jerky cylinder operation. The ultimate consequence is a complete loss of hydraulic function in the affected cylinder, potentially disabling equipment operation.

Installation Tip

Thoroughly clean the cylinder bore and rod before installing the new seals to prevent contamination and ensure a proper seal. Avoid using sharp tools that could nick or damage the new seals during installation.

Service Note

Inspect the hydraulic fluid for contamination and check the hydraulic pump and hoses for wear or leaks when replacing cylinder seals.