CATSeals & O-Rings

7E9918 Repair Kit — Cat 120g 12g

This is a seal and O-ring repair kit designed to restore the integrity of hydraulic or pneumatic systems. It ensures proper sealing to prevent fluid leakage and contamination, maintaining system pressure and efficiency. Failure of these seals can lead to gradual loss of system performance, visible external leaks, and potential contamination of the fluid.

Repair Kit – Part No 7E9918 – CAT Spare Part
Part Specifications
BrandCAT
CategorySeals & O-Rings
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

Always match seal material to fluid type — NBR for petroleum, FKM (Viton) for high-temperature/chemical applications. Lubricate seals with clean fluid before fitting — never grease. Check shaft surface for scoring — rough surfaces destroy new seals within hours.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeRepair Kit (Seals & O-Rings)
MaterialNBR rubber, Viton, or similar elastomers
ApplicationVarious hydraulic and pneumatic systems
Service LifeReplace as needed based on inspection or failure
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure may include a slight decrease in system responsiveness or minor external fluid seepage around the component. If ignored, leaks will worsen, leading to significant fluid loss and potential system overheating or erratic operation. Unaddressed seal failure can result in component damage due to lack of lubrication or pressure.

Installation Tip

Ensure all mating surfaces are meticulously clean and free of any debris or burrs before installing new seals. Avoid using sharp tools that could nick or scratch the seal during installation.

Service Note

Inspect the component's cylinder bore or shaft for scoring or wear that could compromise the new seals' effectiveness.