CATEngine Parts

1400690H91 O-Ring Kit Komatsu® — Cat 320C 320D

This is an O-Ring Kit designed for sealing various components within Caterpillar and Komatsu equipment, crucial for preventing fluid leaks and maintaining system pressure. Manufactured to high-quality standards, these O-rings offer superior durability and sealing performance over worn or degraded seals that can lead to leaks and contamination. Operators may notice fluid leaks around engine or hydraulic components, or a drop in system pressure, indicating a failure in these seals.

O-Ring Kit Komatsu® – Part No 1400690H91 – 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

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Related CAT Parts

From the same category — may also be needed

263-8218
Fuel Injector
9Y7212
Piston
336-7516
Camshaft
177-2391
Gear Front Housing Cover Gasket
2845044
Spindle-Wheel
313-3996
Crankshaft

Browse all CAT Engine Parts →

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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 TypeO-Ring Kit
MaterialNBR rubber or equivalent high-grade elastomer
ApplicationEngine and hydraulic systems sealing
Service LifeReplace as needed during component service or overhaul
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The initial symptom of failing O-rings is often a visible fluid leak from a sealed connection or component. If ignored, these leaks can worsen, leading to significant fluid loss, potential contamination of the system, and a gradual decrease in hydraulic or engine performance. Continued operation with leaking O-rings risks component damage due to low fluid levels or inadequate lubrication.

Installation Tip

Thoroughly clean all sealing surfaces before installing new O-rings to ensure a proper seal and prevent premature failure. Never reuse old O-rings, as they lose their elasticity and sealing capability.

Service Note

Inspect associated seals, gaskets, and fluid levels for any signs of wear or contamination when replacing O-rings.