Midland Industries

Midland Red Brass Countersunk Plugs

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  • Midland Red Brass Countersunk Plugs
  • Midland Industries
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Description

Midland Red Brass Countersunk Plugs

Midland Red Brass Countersunk Plugs are precision-machined threaded fittings designed to securely seal compatible female threaded pipe openings while maintaining a low-profile, flush-style installation.

Manufactured from high-quality domestic red brass, these plugs provide excellent corrosion resistance, dependable strength, and long service life in plumbing, HVAC, industrial, and general fluid handling systems. Precision-machined male NPT threads provide secure engagement, while the countersunk head helps keep the installed profile compact and unobtrusive.

Product Highlights

  • Red brass countersunk pipe plug
  • Domestic red brass construction
  • Male NPT threaded connection
  • Low-profile countersunk head design
  • Designed to seal compatible female threaded openings
  • Precision-machined NPT threads
  • Excellent corrosion resistance
  • Good resistance to dezincification
  • Available in multiple nominal pipe sizes
  • Suitable for plumbing, HVAC, industrial, and fluid handling systems

Technical Specifications

Product Type Countersunk Pipe Plug
Brand Midland
Material Domestic Red Brass
Connection Type Male NPT
Thread Type NPT
Head Style Countersunk / Low Profile
Available Sizes Multiple Nominal Pipe Sizes
Primary Function Sealing Compatible Female Threaded Pipe Openings
Typical Applications Plumbing, HVAC, Industrial, Mechanical, and General Fluid Handling Systems

Plug Configuration

Male NPT Thread

The plug features a precision-machined male NPT connection for installation into a compatible female threaded pipe, fitting, valve, manifold, or equipment port.

Red Brass Body

The domestic red brass construction provides dependable mechanical strength along with excellent resistance to corrosion in compatible piping environments.

Countersunk Head

The countersunk head provides a compact, low-profile installation that helps minimize protrusion from the surrounding threaded fitting or equipment surface.

Construction Details

Midland Red Brass Countersunk Plugs are manufactured from durable domestic red brass for dependable strength, corrosion resistance, and long-term performance in compatible piping applications.

Precision-machined male NPT threads provide secure engagement with compatible female threaded components when installed using accepted piping practices.

The countersunk design provides a lower installed profile than raised square-head or hex-head plugs, making it useful where clearance, appearance, or reduced protrusion is important.

Why Choose a Countersunk Plug?

Low-Profile Installation

  • Compact countersunk head
  • Reduced external protrusion
  • Useful where clearance is limited
  • Provides a clean installed appearance
  • Creates a removable threaded closure

Red Brass Construction

  • Excellent corrosion resistance
  • Good resistance to dezincification
  • Dependable mechanical strength
  • Suitable for compatible commercial and industrial systems
  • Designed for long-term threaded service

NPT Threaded Connection

Male NPT

Each plug uses a male NPT thread designed to install into a compatible female NPT opening of the corresponding nominal pipe size.

Thread Sealing

Use an appropriate thread sealant or PTFE tape where required by the application to help provide a secure, leak-resistant threaded connection.

Typical Applications

Plumbing & HVAC

  • Threaded plumbing systems
  • HVAC piping
  • Mechanical systems
  • Unused fitting openings
  • Low-clearance installations

Industrial & General Service

  • Industrial piping systems
  • Valve and manifold ports
  • Fluid handling equipment
  • Maintenance and repair
  • Compatible general-purpose piping systems

Size Selection

Midland Red Brass Countersunk Plugs are available in multiple nominal pipe sizes.

Confirm the required nominal pipe size and verify that the mating component uses a compatible female NPT thread before ordering.

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Ask Willy: Need Help Selecting a Red Brass Countersunk Plug?

Our pipe and fitting specialists can help review your nominal pipe size, female NPT connection, clearance requirements, system media, pressure, temperature, and material compatibility before you order.

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Frequently Asked Questions

What material are these plugs made from?

They are manufactured from domestic red brass.

What type of connection do they use?

They use male NPT threaded connections.

What is a countersunk plug used for?

A countersunk plug is used to seal a compatible female threaded opening while maintaining a compact, low-profile installed configuration.

What is the advantage of the countersunk head?

The countersunk head reduces external protrusion compared with raised square-head or hex-head plug designs.

Are multiple sizes available?

Yes. Midland Red Brass Countersunk Plugs are available in multiple nominal pipe sizes.

Why use red brass?

Red brass provides dependable mechanical strength along with excellent corrosion and dezincification resistance in compatible piping systems.

Should thread sealant be used?

Use an appropriate thread sealant or PTFE tape on the male NPT connection according to the application requirements.

Can the plug be removed later?

Yes. The threaded design allows the plug to be removed for maintenance, inspection, repair, or future system modifications.

Where are countersunk plugs useful?

They are useful in threaded pipe, fittings, valves, manifolds, and equipment openings where a lower-profile closure is preferred.

What should I verify before ordering?

Confirm the nominal pipe size, mating female NPT thread, available clearance, system pressure, temperature, media compatibility, and installation requirements.

Important Ordering & Installation Notes

  • This listing is for Midland Red Brass Countersunk Plugs.
  • Available in multiple nominal pipe sizes.
  • Each plug uses a male NPT threaded connection.
  • Verify the mating opening uses a compatible female NPT thread.
  • The countersunk design provides a low-profile installed configuration.
  • Use an appropriate thread sealant or PTFE tape where required.
  • Use the appropriate tool or drive method for the specific countersunk plug configuration.
  • Avoid excessive tightening that could damage the plug or mating threads.
  • Verify red brass is suitable for the intended media and operating environment.
  • Confirm pressure and temperature requirements before installation.
  • Inspect mating threads for damage or contamination before assembly.
  • Ensure sufficient installation and removal access is available.
  • Check completed connections for leakage before placing the system into service.
  • Pipe, fittings, valves, and additional installation materials are sold separately unless otherwise specified.
  • Install according to accepted piping practices and Midland manufacturer recommendations.
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