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Graco 236577 Packing Nut

$272.43
$319.00
Save 15%
In Stock
Part #: 236577

Genuine Graco 236577 Packing Nut designed to secure and compress throat packings in industrial pump wet-cup assemblies, helping prevent leaks and maintain consistent pressure.

  • OEM replacement part by Graco
  • Used in selected Graco industrial and FAMX™ pumps
  • Supports leak-free, high-pressure operation
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Genuine OEM Part Fast Shipping (Order by 1 PM CST) Easy Returns

Compatible Machines

  • Graco FAMX™ Industrial Pump Series
  • Graco Reciprocating Displacement Pumps (selected models)
  • Graco High-Pressure Fluid Transfer Pumps using open wet-cup design

Compatibility depends on the pump’s parts diagram. Always verify the part number 236577 in your machine manual before ordering.


Product Overview

The Graco 236577 Packing Nut is a genuine OEM service component designed for use in Graco industrial pump assemblies. It plays a critical role in securing and compressing the throat packing inside the pump’s wet-cup area, helping maintain a tight seal around the displacement rod.

By keeping the packing properly compressed, this component helps reduce fluid leakage, supports consistent pump performance, and extends the life of internal seals when operating under high pressure.


Function & Application

  • Secures and compresses throat packings in the pump wet-cup
  • Helps prevent material leakage around the pump rod
  • Supports smooth pump operation under continuous pressure
  • Designed for industrial coating, lubrication, and fluid transfer systems

Technical Highlights

Part Number 236577
Component Type Packing Nut
Application Area Throat / Wet-Cup Assembly
Manufacturer Graco
OEM Status Genuine Replacement Part

Maintenance Notes

During routine maintenance, the packing nut should be inspected for proper tightness and wear. If leakage is observed around the pump rod, adjusting or replacing the packing nut may be required to restore sealing performance.


Frequently Asked Questions

It compresses the throat packing in the pump wet-cup to help prevent fluid leaks and maintain consistent pump pressure.

Yes, this is a genuine OEM component manufactured to Graco specifications for proper fit and durability.

Check your pump’s service or parts manual and confirm that packing nut part number 236577 is listed in the throat or wet-cup assembly.

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