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Graco 120189 Stainless Steel Nut Cap

The Graco 120189 Nut Cap SST is a durable stainless steel fitting designed for high-pressure airless sprayers. Key benefits include:

  • Compatible Machines: Mark V ProContractor, Mark X Pro, King Airless, Ultra Max II 695, Contractor PC
  • High Pressure: Supports up to 4500 psi
  • Durable Material: 316L stainless steel with passivation
  • Easy Installation: Precision threads for leak-free connection

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Compatible Machines for Graco 120189 Nut Cap SST

  • Graco Mark V ProContractor
  • Graco Mark X Pro
  • Graco King Airless Sprayer
  • Graco Ultra Max II 695
  • Graco Contractor PC

Graco 120189 Nut Cap SST – High-Performance Stainless Steel Component

The Graco 120189 Nut Cap SST is a precision-engineered stainless steel fitting designed for high-pressure hydraulic systems, ensuring leak-free connections and reliable fluid control in industrial airless sprayer applications.

Key Features

  • 316L stainless steel construction for superior corrosion resistance
  • Precision CNC machining for repeatable thread tolerances
  • Supports pressures up to 4500 psi in airless sprayer systems
  • Compatible with solvent-based and waterborne coatings
  • Optimized internal profile reduces turbulence and cavitation

Specifications

Material 316L Stainless Steel, passivated
Thread Standard ISO 7-1 Pipe Thread
Operating Pressure Up to 4500 psi
Surface Finish Polished Ra ≤ 0.4 μm on wetted surfaces
Burst Pressure Exceeds 10,000 psi
Compatibility Solvent-based and waterborne coatings, high-viscosity fluids

Installation & Maintenance

Torque to 25–30 Nm using a calibrated wrench. Apply approved thread lubricant to prevent galling. Inspect periodically for surface blemishes and replace O-rings as needed for optimal sealing performance.

Frequently Asked Questions

Compatible with Graco Mark V ProContractor, Mark X Pro, King Airless Sprayer, Ultra Max II 695, and Contractor PC.

It is made of 316L stainless steel with passivation for excellent corrosion resistance and durability in high-pressure applications.

Designed for pressures up to 4500 psi, ensuring reliable performance in industrial airless sprayer systems.

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