Merit Brass NLBS118HC-02 Countersunk Pipe Plug 1/8 in

Product Description

The MERIT BRASS NLBS118HC-02 is a brass countersunk pipe plug designed to close off threaded pipe openings in pressurized plumbing and piping systems. Rated at Class 125 with a pressure rating of 125 psi, this plug uses MNPT x FNPT threaded connections for reliable sealing. The countersunk head profile sits flush or below the surface of the fitting, making it well suited for installations where a low-profile closure is required. Constructed from lead free brass, it meets lead free compliance standards appropriate for potable water and general service applications. Plumbers and pipefitters install this fitting as a permanent or temporary pipe termination point.

This plug is used in residential and light commercial plumbing systems wherever a 1/8 inch threaded pipe port needs to be sealed. Common applications include capping unused branch tee outlets, plugging test ports, and closing off instrument or gauge connections on water, air, or gas distribution piping. The threaded MNPT x FNPT interface allows hand-tight starting followed by wrench tightening for a pressure-rated seal. Its compact 1/8 inch fitting size makes it a standard item for service technicians carrying assorted brass fittings.

Key Features

• Countersunk head profile for flush or recessed installation
• Class 125 pressure rating at 125 psi
• Lead free brass construction suitable for potable water service
• MNPT x FNPT threaded connection for standard pipe thread fitment
• 1/8 inch fitting size for small-diameter port closures
• Lightweight at 0.08 pounds per piece

Compatibility

Designed as an OEM-style replacement or standard service fitting for 1/8 inch NPT threaded pipe ports in Class 125 plumbing and piping assemblies.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters following applicable IPC and local plumbing code requirements. Depressurize and drain the affected line before removing or installing any threaded pipe plug. Apply an appropriate thread sealant or PTFE tape to the male threads before installation and tighten with a wrench to achieve a leak-free seal. Do not overtighten, as this can crack the fitting or damage the mating threads.