Holo-krome 11106 Brass Socket Pressure Plug 3/8-18

Product Description

The HOLO-KROME 11106 is a brass socket pressure plug designed to seal threaded ports and openings in fluid and pneumatic systems. It uses a 3/8-18 NPT tapered thread with a 7/8 inch taper per foot, providing a pressure-tight mechanical seal as the plug is driven into the port. The overall length is 13/32 inch. Drive engagement is via a 5/16 inch hex key socket, keeping the installation profile low and flush with the surrounding surface. Brass construction resists corrosion in water, oil, and many mild chemical service environments, making it a common choice for hydraulic manifolds, pneumatic circuits, and plumbing distribution blocks.

This plug is suited for use in residential and commercial plumbing, HVAC refrigerant and chilled-water piping, pneumatic control systems, and hydraulic equipment where a permanent or semi-permanent port seal is required. Its compact 13/32 inch overall length makes it practical in tight port clusters where a hex head plug would interfere with adjacent fittings or components. Plumbers, pipefitters, and HVAC technicians regularly use socket plugs of this type to cap unused tee or cross branch outlets and manifold ports.

Key Features

• 3/8-18 NPT tapered thread for pressure-tight port sealing without a separate gasket
• 7/8 inch taper per foot per NPT standard for reliable thread engagement
• 5/16 inch internal hex drive keeps the plug flush and clears adjacent fittings
• Brass construction provides corrosion resistance in water, oil, and mild chemical service
• 13/32 inch overall length suits confined port locations

Compatibility

Designed as an OEM-style replacement or service fitting for any threaded port accepting a 3/8-18 NPT tapered thread socket pressure plug in plumbing, HVAC, pneumatic, or hydraulic applications.

Installation Notes

Installation is performed by plumbers, pipefitters, or HVAC technicians. De-pressurize and isolate the system before installing or removing any threaded plug. Apply an appropriate thread sealant or PTFE tape to the tapered threads before installation; do not over-drive, as NPT tapered threads seal by thread interference and excessive torque can split brass fittings or damage the port. A 5/16 inch hex key is required for installation and removal.