CATCab & Body Parts

171-9409 Floating Oil Seal — Cat Excavator 307B 307C 308

This floating oil seal is a critical component for sealing rotating shafts and housings, preventing the ingress of contaminants and the egress of lubricants in excavator applications. It is constructed from high-quality materials to withstand harsh operating conditions and maintain a seal far longer than a worn or damaged seal which may show signs of cracking, hardening, or tearing. Operators might observe hydraulic fluid leaks, excessive dirt or debris accumulation around the shaft, or unusual noises originating from the affected component when this seal fails.

Floating Oil Seal – Part No 171-9409 – CAT Spare Part
Part Specifications
BrandCAT
CategoryCab & Body 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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Installation & Application Notes

Clean mating surfaces before fitting cab seals to prevent air and water ingress. Use correct adhesive for glass bonding — structural automotive adhesive, not silicone. Check wiring harness routing when replacing doors or panels.

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

Part TypeFloating Oil Seal
MaterialNBR Rubber, Steel
ApplicationExcavator Undercarriage/Drive System
Service LifeReplace every 1,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing floating oil seal include visible lubricant leakage or the accumulation of dirt and grime around the sealed component. If ignored, the leakage will worsen, potentially leading to insufficient lubrication and increased wear on the rotating parts. The ultimate consequence is accelerated component damage and potential system failure due to contamination or lack of lubrication.

Installation Tip

Carefully inspect the mating surfaces of the shaft and housing for any burrs or damage that could compromise the new seal's integrity. Ensure the seal is pressed in squarely and not cocked, which can lead to immediate leakage.

Service Note

Inspect the shaft for wear or scoring and clean the housing thoroughly before installing the new seal.