1/4 inch Stainless Steel Square Head Plug

1/4 Inch Stainless Steel Square Head Plug – NPT Threaded Pipe Seal

The 1/4 inch Stainless Steel Square Head Plug is engineered to seal female-threaded pipe ends in a range of pressure systems. Manufactured from corrosion-resistant 304 stainless steel, it offers dependable performance in demanding applications, including fluid, gas, and steam lines. The square head configuration allows for reliable wrench application in confined or hard-to-reach spaces.

Product Specifications

• Material: 304 Stainless Steel
• Nominal Size: 1/4 inch
• Thread Type: Male NPT (National Pipe Tapered)
• Head Type: Square Head for wrench tightening
• Compliance: Suitable for use in potable water and general pressure applications

Performance Features

• Corrosion Resistance: 304 stainless steel offers superior protection in high-moisture, chemical, or outdoor environments.
• Pressure Rated: Designed for use in systems requiring tight, secure seals under moderate to high pressure.
• Machined Threads: Threads are precision-cut to maintain engagement integrity and reduce risk of thread galling during assembly.

Installation Guidelines

Apply a thread sealant such as PTFE tape or anaerobic thread compound to the male threads before installation to ensure a leak-free seal. Use a suitable open-end or adjustable wrench on the square head to tighten the plug securely. Do not overtighten, especially when installed in softer metals, to avoid damage to the receiving threads.

Common Applications

• Sealing unused ports in manifolds and valves
• Temporary or permanent closure of gauge taps and test points
• Industrial air and hydraulic systems
• Corrosive environments requiring stainless hardware

Note

This plug is intended for use with compatible NPT-threaded fittings and piping. Confirm material compatibility and pressure requirements prior to installation.

The 1/4 inch Stainless Steel Square Head Plug provides a secure and durable sealing solution for industrial-grade systems where corrosion resistance and pressure integrity are essential. It meets contractor expectations for reliability, mechanical strength, and ease of installation in high-performance piping environments.