Midland Industries 63656 Square Head Plug 1-1/4 Mpt 316 Ss

Product Description

The MIDLAND INDUSTRIES 63656 is a cored square head plug designed for sealing pipe ends in industrial and commercial piping systems. Constructed from 316 stainless steel, it delivers reliable corrosion resistance in demanding service environments. The 1-1/4-inch male pipe thread (MPT) connection conforms to ASME B1.20.1 dimensional standards, with a 1-1/4-11-1/2 thread form. Rated at 150 lb pressure class, this plug is a standard choice for threaded pipe assemblies across a wide range of fluid and gas media. Plumbers, pipefitters, and mechanical contractors install this fitting during system commissioning, maintenance, and pressure testing.

This plug is suited for use in residential, commercial, and light industrial piping systems where a secure, threaded pipe-end closure is required. Approved media include air, water, oil, natural gas, and steam. The square head profile allows installation and removal with a standard open-end wrench or pipe wrench, making it practical for tight access points and routine service work.

Key Features

• 316 stainless steel construction resists corrosion in wet, chemical, and outdoor service conditions
• 1-1/4-inch MPT connection with 1-1/4-11-1/2 thread form per ASME B1.20.1
• 150 lb pressure class rating suitable for standard commercial piping applications
• Compatible with air, water, oil, natural gas, and steam media
• Square head drive accepts standard open-end or pipe wrenches for easy installation

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 150 lb threaded piping systems using 1-1/4-inch NPT connections across air, water, oil, natural gas, and steam service lines.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC code requirements. Depressurize and isolate the pipe section before installing or removing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before engagement. Do not over-torque stainless steel threaded fittings, as galling can occur; use steady, controlled wrench force.