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Graco 108877 Packing O-Ring

The Graco 108877 Packing O‑Ring is an essential seal for maintaining pressure and preventing leaks in Graco pump systems. Key points to know:

  • OEM part – ensures proper fit and performance
  • Used in internal pump or fluid module seals
  • Helps prevent leaks and maintain system pressure
  • Verify compatibility with your machine model

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Product Overview – 108877 Packing O-Ring

This is the genuine OEM Graco 108877 Packing O-Ring. It is designed as a critical sealing component within Graco fluid-handling and spray systems. The O-ring helps prevent leaks, maintain pressure integrity, and ensure reliable system performance.

Compatible Machines

Part number 108877 is used across various Graco fluid handling assemblies. However, the complete model compatibility list is not officially published.

Important: Always verify compatibility using your machine’s parts manual or service diagram before ordering.

Part Number 108877
Component Type Packing O-Ring (Sealing Component)
Typical Installation Area Pump gland, fluid section, or internal seal groove
Application Maintains pressure and prevents internal fluid leakage
Compatibility Note Must be verified by exact machine model & serial number

Key Features & Benefits

  • ✔ Genuine OEM part for proper fit and performance
  • ✔ Designed for reliable sealing in high-pressure fluid systems
  • ✔ Helps reduce downtime caused by leaks or seal failure
  • ✔ Ideal for preventive maintenance and service repairs

Installation & Service Tips

  • Always fully depressurize and flush the system before servicing.
  • Inspect the seal groove for wear, scoring, or debris before installation.
  • Lightly lubricate the O-ring (if recommended in your manual) to prevent tearing during installation.
  • After replacement, run the system at low pressure first and inspect for leaks.

Frequently Asked Questions

It creates a secure seal inside the pump or fluid module to prevent leakage of coatings or fluids, maintain operating pressure, and ensure consistent performance.

Check your machine’s official parts diagram for part number 108877. Confirm dimensions (ID, OD, and cross-section) and compare with your existing seal before installation.

The specific elastomer type is not publicly specified. For chemical-intensive applications, confirm whether nitrile (NBR), fluoroelastomer (FKM), or PTFE variants are required according to your equipment manual.

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