Eaton 3152X2 Brass Hex Plug 1/8 Inch Mnptf

Product Description

The EATON 3152X2 is a straight brass hex plug with a 1/8 inch male MNPTF thread, designed to seal open pipe ends in pressurized fluid and gas systems. Rated to 1,200 psi maximum working pressure and a temperature range of -65 degrees F to 250 degrees F, this plug handles demanding industrial and mechanical service conditions. The hex-drive head allows standard wrench installation, making removal and reinstallation straightforward during maintenance. It is installed by plumbers, pipefitters, and HVAC technicians working on low-pressure and medium-pressure piping systems.

This hex plug is suited for use in industrial piping, hydraulic circuits, pneumatic lines, and plumbing assemblies where a threaded port needs to be capped or temporarily closed. The MNPTF thread form provides a pressure-tight seal on standard NPT-compatible female ports. Typical applications include closing unused tee or manifold ports, capping test points, and sealing instrument connections during system commissioning or service.

Key Features

• 1/8 inch male MNPTF straight thread for NPT-compatible female ports
• 1,200 psi maximum working pressure for medium-pressure service
• Operating temperature range: -65 degrees F to 250 degrees F
• Brass construction resists corrosion in water, air, and many fluid media
• 7/16 inch hex size for wrench-driven installation and removal
• Meets ASA, ASME, and SAE standards

Compatibility

Designed as an OEM-style replacement or service fitting for industrial and commercial piping systems using standard 1/8 inch female NPT ports.

Installation Notes

Installation is performed by licensed plumbers, pipefitters, or HVAC technicians. De-pressurize and isolate the line before removing or installing any pipe plug. Apply thread sealant or PTFE tape appropriate for the media and pressure rating. Tighten with a wrench to the hex flats only — do not overtighten, as brass threads can gall or strip.