Graco 120199 Hex Head Screw Cap 9/16 x 7-1/2

Compatible Machines for Graco 120199 Screw Cap HH 9/16 x 7-1/2

• Graco Industrial Airless Sprayers
• Graco Reciprocating Piston Pumps
• Graco Diaphragm Pump Assemblies
• Graco High-Pressure Filtration Systems

Graco 120199 Screw Cap HH – Durable High-Pressure Seal

The Graco 120199 Screw Cap HH 9/16 x 7-1/2 is designed for industrial pump assemblies and high-pressure airless sprayers. Its precision-engineered threads and hex head allow accurate torque application, ensuring a secure seal and optimal pump performance.

Key Features

• Thread Interface: 9/16"-18 UNF class 2A/2B for tight engagement
• Length: 7.50" barrel for correct manifold spacing
• Material: High-strength steel alloy with trivalent chromium or zinc-nickel plating
• High Pressure: Certified for continuous operation up to 5,000 psi
• Supports O-ring and backup ring sealing for consistent performance
• Precision CNC machining ensures thread and face concentricity within 0.0003"

Specifications

Installation & Maintenance

Clean threads and pump receptacle before installation. Apply a compatible thread lubricant, hand-tighten, and torque in stages to seat the gasket. Inspect regularly for corrosion or wear, and replace O-ring and backup ring per OEM guidelines.

Frequently Asked Questions