Seal and protect threaded ports with the trusted performance of the Anderson Metals 1/4 in. MPT Red Brass Square Head Plug. Built from red brass and crafted for durability, this plug is designed to thread neatly into a 1/4" male pipe thread (MPT) to stop leaks, protect internal components, and simplify maintenance across plumbing, HVAC, and light hydraulic systems.
Key benefits at a glance
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Lead-free construction supports safer, compliant use in potable water and where metal-to-fluid contact occurs.
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Red brass alloy delivers solid corrosion resistance and robust performance across typical hot, cold, and mixed-fluid environments.
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1/4" MPT threading provides broad compatibility with common piping and fittings in residential and light commercial applications.
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Square head design enables easy installation and removal with a standard wrench or socket, even in tight spaces.
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Solid pressure and temperature tolerance rated up to 200 psi and up to 150°F, making it suitable for a range of testing, service, and sealing tasks.
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Practical, single-pack convenience—1 piece per package for quick replacements or on-the-spot repairs.
Where and how to use this plug
The Anderson Metals square head plug is ideal for sealing off a 1/4" MPT port on piping, manifolds, valves, or equipment during maintenance, pressure testing, or system commissioning. It’s a reliable solution when you need a temporary or semi-permanent seal that can be removed later without damaging the thread or surrounding hardware.
Why this plug stands out
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Durable red brass withstands everyday wear and thermal cycling better than standard plastics, reducing the risk of brittle failure in fluctuating temperature environments.
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Lead-free assurance aligns with safety standards for systems carrying potable fluids and reduces environmental concerns.
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Simple, repeatable installation with a square head means consistent torque application and easier future removal, even in recessed or awkward spaces.
Installation tips and best practices
- Ensure the mating threads are clean and free of debris before installation to achieve a proper seal.
- Use an appropriate pipe thread sealant or PTFE tape rated for brass threads to prevent leaks. Apply evenly and avoid over-torquing the plug.
- Tighten until snug with a wrench on the square head; avoid excessive force that could damage threads or the plug body.
Ideal for
- Residential and light commercial plumbing projects
- HVAC line work and diagnostic testing ports
- Maintenance and service scenarios where a reliable, removable seal is needed
- Equipment housings and manifolds requiring a compact, square-head threaded plug
Count on the Anderson Metals 1/4 in. MPT Red Brass Square Head Plug for a dependable, easy-to-use sealing solution that combines solid machining, corrosion resistance, and practical design. Use it to protect, seal, and simplify your piping projects with confidence.
