Midland Industries SS5406-P-02 Hex Pipe Plug 1/8 Mpt

Product Description

The MIDLAND INDUSTRIES SS5406-P-02 is a 316 stainless steel hex pipe plug designed to seal threaded pipe openings in high-pressure and high-temperature fluid or gas systems. With a 1/8-inch male pipe thread (MPT) connection, this plug fits into female-threaded ports to cap off unused lines, test ports, or branch connections. It is rated to 10000 psi operating pressure and up to 1000 degrees F, making it suitable for demanding industrial, hydraulic, steam, and process piping applications. Plumbers, pipefitters, and industrial maintenance technicians are the typical installers.

This plug is used in residential and commercial plumbing, industrial process piping, hydraulic systems, and instrumentation lines where a reliable, corrosion-resistant seal is required. The 1/8-inch MPT thread size is a common port size on valves, manifolds, pumps, and pressure vessels. The 316 stainless steel construction makes it appropriate for corrosive media environments, including chemical processing, marine, and food-grade applications where standard carbon steel fittings would degrade.

Key Features

• 316 stainless steel construction for excellent corrosion resistance in aggressive environments
• Rated to 10000 psi operating pressure for high-pressure system use
• Rated to 1000 degrees F for high-temperature steam and process piping
• 1/8-inch MPT connection seals standard female NPT ports on valves, manifolds, and vessels
• Hex head design allows installation and removal with standard wrenches
• Compact and lightweight at under 0.02 pounds

Compatibility

Designed as an OEM-style replacement or new-installation hex pipe plug for any system with a 1/8-inch female NPT port requiring a threaded closure in stainless steel.

Installation Notes

Installation is performed by plumbers, pipefitters, or qualified maintenance technicians. Depressurize and drain the system completely before removing or installing any threaded fittings. Apply thread sealant or PTFE tape appropriate for the media and temperature range before threading the plug into the port. Tighten with a hex wrench or adjustable wrench to a snug, leak-free fit, and pressure-test the system before returning it to service.