Midland Industries 63663 Solid Hex Head Plug 1/2 Mpt 316 Ss

Product Description

The MIDLAND INDUSTRIES 63663 is a solid hex head plug rated for 150 lb pressure class, machined from 316 stainless steel for corrosion resistance in demanding service environments. It features a 1/2-14 NPT male tapered thread conforming to ASME B1.20.1, making it a standard pipe thread plug for dead-ending or blanking off 1/2 inch female-threaded ports. At 0.14 pounds and compact overall dimensions, this plug fits where space is limited. Plumbers, pipefitters, and HVAC technicians install this fitting to cap unused tee branches, test ports, and manifold outlets in both new construction and retrofit work.

This plug is rated for use with air, water, oil, natural gas, and steam media, covering the majority of fluid and gas services found in commercial and industrial piping systems. Its 316 stainless steel construction handles mildly corrosive media and wet environments where carbon steel or brass fittings would be unsuitable. It is appropriate for residential and light commercial plumbing, HVAC piping, compressed air distribution, and process lines operating within the 150 lb pressure class.

Key Features

• 316 stainless steel construction for corrosion resistance in wet and mildly aggressive media environments
• 150 lb pressure class rating suitable for standard plumbing and HVAC piping applications
• 1/2-14 male tapered thread compliant with ASME B1.20.1 dimensional standard
• Hex head drive allows installation and removal with a standard open-end or adjustable wrench
• Compatible with air, water, oil, natural gas, and steam service media
• Compact profile at 0.85 inches length and 0.9 inches height for tight-clearance installs

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1/2 inch female NPT ports in 150 lb rated piping systems handling air, water, oil, natural gas, or steam media.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC requirements for the media type being served. Always depressurize and isolate the line before removing or installing pipe plugs. Apply an appropriate thread sealant or PTFE tape to the male threads before installation to ensure a leak-free seal. Do not overtighten, as this can crack female-threaded fittings or distort threads.