Midland Industries 28095W3M Countersunk Hex Plug 3/8 in

Product Description

The MIDLAND INDUSTRIES 28095W3M is a countersunk hex plug designed to seal off pipe openings in pressurized systems. It features a 3/8-inch Male NPTF connection with a 3/8-18 thread form and is rated to 1200 psi. The plug is machined from brass and comes pre-applied with thread sealant, eliminating the need for additional tape or compound during installation. At 0.45 inches in length, it presents a low-profile countersunk head that sits flush or recessed relative to the surrounding surface. Plumbers, pipefitters, and mechanical contractors install this type of plug during system assembly, testing, and maintenance to cap unused ports or dead-end branches.

This plug is suited for use in residential and commercial plumbing, pneumatic, and hydraulic piping systems wherever a 3/8-inch NPTF port needs to be sealed. The NPTF thread form creates a pressure-tight mechanical seal without relying solely on sealant. The pre-applied sealant adds an additional layer of leak protection. It is rated for temperatures from -65 degrees F to 250 degrees F, making it appropriate for hot and cold water lines, compressed air, and other fluid-handling applications within that temperature range.

Key Features

• 3/8-18 Male NPTF thread for a dry-seal, pressure-tight connection
• Rated to 1200 psi working pressure
• Brass construction for corrosion resistance and durability in wet environments
• Pre-applied thread sealant included - no additional tape or compound required
• Temperature range of -65 degrees F to 250 degrees F
• Countersunk hex head design for flush or recessed installation

Compatibility

Compatible with brass, bronze, copper, steel, aluminum, and iron pipe systems using 3/8-inch NPTF female ports.

Installation Notes

Installation is performed by licensed plumbers or pipefitters using an appropriately sized hex key or wrench on the 0.31-inch hex drive. Shut off system pressure and depressurize the line before installing or removing any pipe plug. Thread the plug in by hand first to avoid cross-threading, then tighten to a snug fit. Follow applicable IPC or IFGC guidelines for pressure-tested piping systems.