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Graco 236889 Packing Nut

Graco 236889 Packing Nut is a genuine replacement part used in industrial pump lower assemblies to secure and compress the packing for leak-free operation.

  • Part Number: 236889
  • Function: Compresses packing to prevent fluid leaks
  • Application: Graco industrial piston pump lowers
  • Brand: Graco

$749
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Graco 236889 Nut, Packing – Compatible Machines & Product Details

Compatible Machines

  • Graco Dura-Flo 600 Lower Pump Assemblies
  • Graco Dura-Flo 750 Lower Pump Assemblies
  • Select Graco Industrial Piston Pump Lower Units
  • Graco Fluid Handling & Lubrication Systems (model-specific)

Compatibility depends on the specific lower pump assembly. Always verify using your machine’s parts manual before ordering.

Product Overview

The Graco 236889 Packing Nut is a genuine Graco replacement component designed to secure and compress the packing stack within industrial pump assemblies. It plays a critical role in maintaining a tight seal around the piston or rod, helping to prevent fluid leakage and ensuring consistent pressure during operation.

This part is commonly used in Graco industrial fluid handling equipment where reliable sealing and long service life are essential. It is manufactured to Graco’s precise tolerances for proper fit and dependable performance.

Key Features

Part Number 236889
Product Type Packing Nut
Application Industrial pump lower assemblies
Function Compresses packing to create a leak-resistant seal
Brand Graco

Why Replace the Packing Nut?

  • Helps eliminate fluid leaks around the pump rod
  • Maintains proper sealing pressure on packing components
  • Supports smooth pump operation and consistent output
  • Essential during routine pump maintenance or rebuilds

Frequently Asked Questions

A packing nut compresses the packing set inside the pump lower, creating a tight seal around the piston or rod to prevent leaks and maintain operating pressure.

No. This packing nut fits specific industrial pump lower assemblies. Always confirm compatibility using your equipment’s parts diagram or manual.

It should be inspected during routine maintenance and replaced if damaged, worn, or when rebuilding the pump lower to ensure proper sealing.

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