6 Pack 9/16-18 UNF Inner Hex Head Pipe Plug, Carbon Steel Socket Fitting with O Ring Seal for Closing Pipe Ends, High Pressure Washer, Irrigation, Sprinkler, and Fluid System Applications

9/16-18 UNF Inner Hex Head Pipe Fitting Plug
✔️ Carbon Steel Sealing Plug with O Ring 6 Pack

This is a 6-pack of inner hex head pipe fitting plugs used to close off pipe ends and pressure ports. These plugs are commonly used in irrigation systems, high pressure washers, sprinkler lines, pools, and cold water piping where a tight, reliable seal is needed.

✅ Pack size: 6 pieces
✅ Thread size: 9/16-18 UNF
✅ Material: zinc plated carbon steel
✅ Finish: corrosion resistant silver coating
✅ Head style: inner hex head for clean, low profile installation
✅ Seal type: included rubber O ring for leak prevention
✅ Application: pipe termination, pressure fittings, sensor ports
✅ Installation: installs with standard hex wrench
✅ Recommended temperature limit: up to 100 C

Dimensions
Thread Size 9/16-18 UNF
Thread Length 0.30 inch 7.5 mm
Overall Diameter 0.51 inch 13 mm
Overall Height 0.69 inch 17.5 mm
Hex Width 0.23 inch 6 mm

💡 What is an inner hex pipe fitting plug used for in pressure systems?
It is used to safely seal unused ports while maintaining pressure integrity.

• Precision threads help prevent loosening under vibration or pressure

• O ring provides a tight seal to stop leaks and fluid loss

• Carbon steel construction handles higher load than basic fittings

• Inner hex design keeps the plug protected and flush

This plug set is a handy solution when you need a compact, strong, and dependable seal for pipe ends and pressure ports in everyday fluid systems.