Midland Industries LF121-8 Cored Hex Head Plug 1/2 Mpt

Product Description

The MIDLAND INDUSTRIES LF121-8 is a cored hex head plug designed for use in brass or steel pipe systems. It features a 1/2-inch MPT (male pipe thread) connection and is manufactured from lead-free brass, making it suitable for potable water and plumbing applications where lead-free compliance is required. The plug measures 0.81 inches in length with a 0.87-inch hex drive, allowing installation with standard wrenches. At 0.094 pounds, it is a compact fitting intended for licensed plumbers and pipefitters working on pipe termination or pressure-testing tasks.

This plug is used to cap or close off 1/2-inch male pipe thread openings in brass or steel pipe assemblies. Typical applications include residential and light commercial plumbing systems, HVAC hydronic piping, and general-purpose pipe work where a threaded port must be sealed. The lead-free brass construction meets requirements for systems carrying drinking water.

Key Features

• Lead-free brass construction for potable water compliance
• 1/2-inch MPT connection for standard male pipe thread fittings
• 0.81-inch length and 0.87-inch hex drive for compact, wrench-friendly installation
• 1/2-14 thread specification ensures consistent thread engagement
• Compatible with both brass and steel pipe systems
• Cored hex head design for reliable torque application

Compatibility

Designed for use with brass or steel pipe featuring 1/2-inch NPT female threads. Suitable as an OEM-style replacement or new-installation plug in residential and commercial pipe systems requiring lead-free fittings.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters. Shut off and depressurize the pipe system before removing or installing any fitting. Apply thread sealant tape or compound appropriate for the system fluid before threading the plug into the female connection. Do not overtighten; use a wrench on the hex head only and follow applicable IPC or local plumbing code torque guidelines.