Merit Brass 3617DA-02 Square Head Pipe Plug 1/8 in Ss

Product Description

The MERIT BRASS 3617DA-02 is a square head pipe plug designed for sealing threaded pipe ends in fluid and gas piping systems. Manufactured from 316/316L stainless steel, this plug offers strong corrosion resistance suitable for demanding industrial and commercial environments. It carries a pressure rating of 3,000 psi and connects via a male NPT (MNPT) threaded end. Licensed plumbers, pipefitters, and mechanical contractors install this type of plug when capping off unused branch outlets, test ports, or dead-end lines during system commissioning or service work.

This plug is suited for use in process piping, plumbing, HVAC hydronic systems, and light industrial applications where corrosion resistance and pressure integrity are required. The 1/8 inch fitting size is commonly found in instrument taps, gauge ports, and small-diameter branch connections. Its 316/316L stainless steel construction makes it appropriate for mildly corrosive media including water, steam, and many chemical service lines.

Key Features

• 316/316L stainless steel construction for corrosion resistance in wet and chemical service
• 3,000 psi pressure rating suitable for high-pressure piping applications
• MNPT threaded connection for standard pipe thread engagement
• Square head drive allows installation and removal with a wrench
• 1/8 inch fitting size fits common instrument and gauge port connections

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1/8 inch MNPT threaded pipe systems requiring a stainless steel square head plug.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and ASME B31 piping code requirements. Depressurize and drain the affected piping system completely before removing or installing any threaded plug. Apply an appropriate thread sealant or PTFE tape to the male threads before engagement. Do not overtighten; use a wrench on the square head only and avoid pipe wrenches on the plug body to prevent damage to the fitting.