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Graco 166165 PTFE V-Packing

The Graco 166165 PTFE V-Packing is a durable OEM seal used in the fluid section of Graco airless sprayers for reliable leak prevention and smooth piston movement.

  • Material: PTFE (Teflon) for chemical resistance
  • Ensures tight sealing and consistent pressure
  • Ideal for pump rebuilds and maintenance
  • Used in throat/piston area of compatible Graco pumps

$36.33
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Key Details & Compatibility – Graco 166165 PTFE V-Packing

Compatible Machines

Fits Graco airless sprayers whose pump parts list specifies part number 166165. Examples reported by reputable aftermarket references include:

  • Graco Ultra Max II 695
  • Graco ProX19
  • Graco Magnum X7
  • Graco Ultra 500
  • Graco ProContractor 2100
  • Graco Mark X (select pump variants)

Overview

Graco 166165 PTFE V-Packing is an OEM sealing stack used in the fluid section (throat/piston) of select Graco airless pumps. The V-shaped rings compress under pressure to control leakage while allowing smooth rod travel, helping restore prime, pressure stability, and finish quality.

Why this part

  • PTFE material for chemical resistance and low friction.
  • OEM fit and sealing performance when rebuilding the fluid section.
  • Helps reduce weeping at the throat and extends pump service intervals.

Specifications

Part Number 166165
Description PTFE V-Packing (seal stack for fluid/piston or throat)
Material PTFE (Teflon)
Typical Location Fluid section (around piston/rod) of compatible Graco pumps
Replacement Triggers Leakage at throat, loss of pressure/prime, scheduled pump rebuild

Install & Care Notes

  • Clean and inspect the packing area and rod; replace worn components together.
  • Observe correct V-ring orientation (lips face pressure) per your pump’s IPL.
  • Lubricate as specified; re-torque glands to manufacturer guidance.
  • Pressure-test after rebuild to confirm sealing performance.

Frequently Asked Questions

Open your model’s Illustrated Parts List and check the fluid-section bill of materials. If the seal stack line item shows 166165, you can use it. If not listed, contact support with your model and serial code.

PTFE offers excellent chemical resistance and low friction, making it ideal for many solvent or abrasive coatings. Some pumps use mixed stacks (e.g., leather + PTFE) to balance sealing and lubrication; follow the stack specified in your IPL.

Visible weeping at the throat, difficulty holding pressure, pulsation, or rapid pressure drop after priming. If these occur, inspect the rod and replace the packing stack as part of a fluid-section service.

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