Midland Industries 06121-16 Cored Hex Head Plug 1 in Nptf

Product Description

The MIDLAND INDUSTRIES 06121-16 is a cored hex head plug designed to close off open pipe ends in pressurized fluid and gas systems. Machined from brass, this plug features a 1-inch male NPTF thread that forms a dry-seal connection without requiring additional sealant tape under most conditions. It is rated to 1000 psi and handles temperatures from -65 degrees F to 250 degrees F, making it suitable for a wide range of commercial and industrial plumbing applications. The 1.37-inch hex drive allows installation with standard hand or power wrenches. Licensed plumbers and pipefitters are the primary installers of this fitting type.

This plug is used to terminate 1-inch pipe runs in residential, commercial, and light industrial systems. It is compatible with brass, bronze, copper, steel, aluminum, and iron pipe, which makes it a practical choice for mixed-material plumbing assemblies, hydronic heating lines, compressed air systems, and general-purpose pipe work. The cored design distinguishes it from a solid plug and is commonly specified where future access or system expansion may be required at that port.

Key Features

• 1-inch male NPTF dry-seal thread eliminates the need for additional sealant in many installations
• 1000 psi pressure rating suitable for pressurized fluid and gas service
• Operating temperature range of -65 degrees F to 250 degrees F
• 1.37-inch hex drive accepts standard wrenches for controlled installation torque
• Brass construction provides corrosion resistance across a broad range of compatible pipe materials
• Cored design supports future port access without full fitting removal

Compatibility

Rated for use with brass, bronze, copper, steel, aluminum, and iron pipe systems with 1-inch NPTF female connections.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable IPC or local plumbing codes. Shut down system pressure and bleed the line before removing or installing any threaded plug. Use a properly sized wrench on the hex drive to avoid rounding. Inspect the female receiving thread for damage before engagement to ensure a proper NPTF dry-seal fit.