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Graco 190585 Packing Nut 8cm Hotmelt

The Graco 190585 Nut Packing 8CM Hotmelt is a genuine OEM pump packing nut, designed for reliable sealing in displacement pump assemblies.

  • OEM replacement part for Graco pumps
  • Secures packing to prevent fluid bypass
  • Durable metal construction
  • Easy to install in maintenance or rebuild jobs

Retail Price: $227
You save: $14.19 (6.25%)
Our Price: $212.81
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Graco 190585 Nut Packing 8CM Hotmelt – Pump Seal Replacement

Compatible Machines

  • Graco 190 Series Airless Sprayer (pump assemblies)
  • Graco 290 Series Airless Sprayer (when equipped with similar pump)
  • Graco 390 PC and related displacement pumps
  • Other Graco airless sprayers using 8 cm packing nuts

Key Features

Feature Benefit
OEM Fit Exact replacement for Graco part number 190585, ensuring proper sealing and performance.
Packing Nut Design Secures packing in displacement pumps to prevent fluid leakage and bypass.
Heavy‑Duty Metal Durable packing nut construction for long service life under pressure.
Service & Maintenance Ideal for use during routine pump rebuilds or when replacing worn components.

Installation & Usage Tips

  • Ensure system is depressurized before removal or installation.
  • Clean contact surfaces prior to fitting to prevent seal damage.
  • Use correct torque to avoid thread deformation or over‑tightening.
  • Inspect adjacent seals and O‑rings, replacing if worn.

Frequently Asked Questions

It secures and compresses packing around the displacement pump rod to maintain a reliable seal under pressure.

This packing nut fits many Graco airless pumps (190/290/390 style), but verify your pump assembly before ordering.

Replace during pump rebuilds or when signs of wear, corrosion, or leakage are present.

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