Midland Industries LF109SD-2 Square Head Solid Plug 1/8 Mpt

Product Description

The MIDLAND INDUSTRIES LF109SD-2 is a square head solid plug designed to seal off threaded pipe openings in plumbing, gas, and fluid distribution systems. Constructed from lead-free brass, it meets lead-free compliance requirements for potable water applications. The plug measures 0.58 inches in length and features a 1/8-27 male pipe thread (MPT) connection. Its square head profile accepts a wrench for secure installation and removal without slippage. This type of fitting is a standard item in any plumber or pipefitter's inventory, used wherever a dead-end seal is needed on a threaded branch or test port.

This plug is suited for residential and light commercial plumbing installations where a 1/8 in MPT threaded port requires capping. Common applications include sealing unused tee outlets, plugging test ports on manifolds, and closing off branch lines during pressure testing. The lead-free brass construction makes it appropriate for systems carrying potable water, in addition to general-purpose brass or steel pipe assemblies.

Key Features

• Lead-free brass construction meets potable water compliance standards
• 1/8-27 MPT thread for a standard, secure pipe connection
• Square head drive accepts a wrench for reliable torque application
• Solid plug design provides a complete dead-end seal with no flow path
• Compact 0.58-inch body fits tight spaces and crowded manifold layouts
• Compatible with both brass and steel pipe systems

Compatibility

Designed for use with brass or steel pipe. Compatible with any standard 1/8-27 NPT threaded fitting or pipe port requiring a solid plug seal.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters. Shut off and depressurize the system before installing or removing any threaded plug. Apply an appropriate thread sealant or PTFE tape to the male threads prior to installation, as required by local plumbing codes. Do not overtighten, as brass threads can be damaged by excessive force.