Midland Industries 63683 Solid Hex Head Plug 1/2 in Mpt

Product Description

The MIDLAND INDUSTRIES 63683 is a solid hex head plug designed to seal pipe ends and unused openings in fluid and gas distribution systems. Machined from 316 stainless steel, this plug offers strong resistance to corrosion and is rated for use with air, water, oil, natural gas, and steam media. It features a 1/2-14 NPT male thread and a 150 lb pressure class rating, conforming to ASME B1.20.1 dimensional standards. The hex head design allows for installation and removal with standard hand tools. Plumbers, pipefitters, and HVAC technicians commonly install this fitting during system assembly, pressure testing, and maintenance.

This plug is suited for residential and commercial piping systems where a threaded 1/2 in MPT connection needs to be closed off. Common applications include sealing tee outlets, capping unused branch connections, and blanking ports on manifolds or equipment. The 316 stainless steel construction makes it appropriate for corrosive or high-purity environments where standard brass or carbon steel fittings are not acceptable. Its compact profile fits easily in tight spaces typical of mechanical rooms and equipment enclosures.

Key Features

• 316 stainless steel construction for corrosion resistance in demanding service environments
• 1/2 in MPT (male pipe thread) connection conforming to ASME B1.20.1
• 150 lb pressure class rating suitable for air, water, oil, natural gas, and steam
• Hex head design accepts standard wrenches for secure installation and removal
• Lightweight at 0.11 pounds, minimizing added load on piping assemblies

Compatibility

Designed as an OEM-style pipe fitting replacement or new-installation component for 1/2 in MPT threaded pipe systems rated at 150 lb pressure class, compatible with air, water, oil, natural gas, and steam media.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC codes. Shut off and depressurize the system completely before removing or installing any threaded plug. Apply an approved thread sealant or PTFE tape to the male threads before tightening. Use a properly sized wrench on the hex head and avoid over-tightening, which can damage threads or fittings.