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Graco 112678 1/4 Nptf Plug

Graco 112678 1/4 NPTF Plug is an OEM stainless-steel plug engineered to securely seal high-pressure ports in Graco fluid systems, ensuring a leak-free connection.

  • Thread Type: 1/4" NPTF (tapered, dry-seal)
  • Material: 17-4 PH Stainless Steel
  • Pressure Rating: Up to 6,000 PSI
  • Fits: Graco sprayers, pumps & manifolds
  • Use: Seals unused or service ports

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Graco 112678 1/4 NPTF Plug – OEM Precision Port Seal for High-Pressure Systems

Compatible Machines

  • Graco Airless Paint Sprayers (Professional & Magnum Series)
  • Graco Hydraulic Pump Assemblies
  • Graco Texture and Coating Systems
  • Graco Fluid Manifolds and Filter Blocks
  • Graco Industrial Finishing Equipment

Product Overview

The Graco 112678 1/4 NPTF Plug is an OEM precision-engineered port plug used to seal unused or service openings in high-pressure fluid systems. Its 1/4-inch NPTF tapered threading ensures a reliable, leak-free seal without the need for excessive sealant. Built from corrosion-resistant stainless steel, it performs reliably in demanding spraying and coating environments.

Specification Details
Part Number 112678
Thread Type 1/4" NPTF (National Pipe Taper Fuel)
Material 17-4 PH Stainless Steel
Pressure Rating Up to 6,000 PSI
Applications Airless sprayers, manifolds, pumps, and coating filtration systems

Key Features

  • Leak-Free NPTF Seal – ensures precision sealing in high-pressure fluid lines.
  • Corrosion-Resistant Construction – made from 17-4 PH stainless steel for longevity.
  • OEM-Approved Fit – manufactured to Graco standards for perfect compatibility.
  • Thermally Stable – maintains integrity across temperature fluctuations.
  • Quick Installation – easy to replace during maintenance or rebuilds.

Installation & Maintenance Tips

Before installing the Graco 112678 Plug, clean all thread surfaces and apply a suitable PTFE-based thread sealant if recommended. Torque to 18–20 Nm for a secure seal. Inspect plugs during service intervals for corrosion or wear and replace if thread integrity is compromised.

Frequently Asked Questions

The Graco 112678 Plug seals unused or service ports in Graco’s airless and hydraulic systems to prevent fluid leaks and maintain consistent system pressure.

It fits multiple Graco airless sprayers, Magnum series, hydraulic pump modules, and industrial coating systems that feature a 1/4" NPTF port.

Always clean the threads and use approved thread sealant before installation. Torque to the manufacturer’s specifications to avoid over-compression and ensure long-term sealing integrity.

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