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Mechanical Design Corporation


Innovative Product Designs to Meet your Specifications, Safety Standards and Budget

Pipe Plugs and Pipe Testing Across Many Industries

The engineers at Mechanical Design Corporation have been designing and manufacturing pipe testing and plugging solutions for over 27 years. With over 35 years’ field experience in the pipeline industry, we have installed, tested and troubleshot piping systems throughout all industries. We attend to numerous companies across a wide variety of industries, most notably:

  • Nuclear Power
  • Municipalities
  • Aerospace
  • Construction
  • Fossil Fuel Power
  • Utilities
  • Military

Customized Pipe Testing and Plugging Solutions

Using our extensive knowledge and experience you can be assured that we will quickly understand your project and advise and deliver the optimal pipe testing or plugging solution. We specialize in the design and manufacturing of a variety of pipe testing and plugging solutions. Select a category below to learn more.

We offer products and solutions including but not limited to

  • Pipe Plugs
  • Bulkheads
  • O.D. Pipe Test Plugs/Cap Plugs
  • Nuclear Plugs
  • Underwater/Offshore Plugs
  • Foreign Material Exclusion Plugs
  • Caps
  • Covers (FME)
  • Double Block and Bleed Plugs
  • Fail Safe Plugs
  • Flange Weld Testers
  • Pipe Joint Testers

American Made Products

We are proud to say that each and every one of our products are manufactured here in the United States. Although we are based in Florida, our services have helped companies all across the country, and we ship to every country.

Installation Services for Pipe Plus and Bulkheads

On occasion, we come across clients who simply do not have the resources necessary to perform their own installations. In these cases, in addition to selling them the proper parts they needs, we offer installation services. The two kinds of installations we provide are:


Diving Installation- If requested, we are able to provide diver installation of our products underwater, be it at sea, at a water and wastewater treatment tank, a dam, a lake, or any other underwater hazardous/non-hazardous location.


Onsite installation- We also make our services available for site plug installation and full testing capabilities of all types of pipeline testing.


Last but not least, we also provide custom pipe plug designs to those companies that require proprietary manufacturing and installation. You can trust us to work closely with distributors in order to provide private label products.

Specializing in the design and manufacturing of a variety of pipe testing and plugging solutions

Nuclear Plugs

Plugs and tools for the nuclear industry.

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Underwater &
Offshore Plugs

Offshore/underwater plugs for the petroleum and shipping industry

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Bulkheads

Round, square and irregular shapes

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American Made

Our products are proudly made in the U.S.A

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Pipe Plugs

pipe plug, pipe plugs, bulkheads

Available in sizes to 240" ( 20' ) and to pressures of 15,000 Psig (1000 bar)
Pipe plugs are used for the isolation of piping systems during testing, repair and maintenance. Pipe plugs can be used for bypassing damaged sections of piping and for the testing of piping systems during construction. These pipe plugs can be used to verify the leak tightness of piping systems prior to putting the piping system into service. They are also used to individually test the integrity of pipe connections i.e. welds, couplings, mechanical joints, gaskets.

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