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The MIDLAND INDUSTRIES 63662 is a solid hex head plug rated for 150 lb pressure service and threaded to a 3/8 in MPT (3/8-18) connection. Machined from 316 stainless steel, this plug delivers strong corrosion resistance in demanding fluid and gas handling systems. The hex head profile accepts a standard wrench for a secure, leak-free makeup. It meets ASME B1.20.1 thread dimensional standards, making it a direct fit in standard pipe assemblies used by plumbers, pipefitters, and HVAC mechanics working in commercial and industrial environments.
This plug is rated for use with air, water, oil, natural gas, and steam media, covering a broad range of piping system applications. The 150 lb pressure class suits residential and light commercial service lines as well as many industrial branch and dead-end pipe connections. At 0.65 inches tall and 0.75 inches in both length and width, it is compact enough for tight manifold and header installations where space is limited.
Designed as an OEM-style replacement or new-installation fitting for 3/8 in MPT threaded pipe systems rated at 150 lb pressure class, including air, water, oil, natural gas, and steam service lines.
Installation should be performed by a licensed plumber or pipefitter following applicable codes such as the IPC or IFGC. Shut off and depressurize the system completely before removing or installing any pipe fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before makeup. Do not overtighten, as 316 stainless fittings can gall if forced beyond hand-tight plus standard wrench turns.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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