specialty plugs

Specialty Plugs


Specialty Plugs Features:
Non-Standard Sizes, Configurations and Applications

Mechanical Research & Design welcomes requirements that are outside normal ranges. We will "go the extra mile" to assist you in developing and producing non-standard plugs, seals, specialty plugs and testers. We have the in-house capabilities to evaluate, design, build and install our products in any situation. We can engineer specialty plugs suitable for underwater, underground or any hostile, hazardous environment and have the ability to provide underwater installation services.


specialty plugsFlange Weld Tester
The "SEALFAST™" Flange Weld Tester is used to test the welded or threaded joint of a flange without the need to test the complete system. This tool consists of a mating flange and internal inflatable seal that isolates the joint allowing the user to check this joint for leakage. They are available in sizes from 3 inches to 96 inches and can withstand test pressures up to 250 psig.

specialty plugsFlow Through By-Pass Plug
The specialty plug, "SEALFAST™" By-pass Plug, features a flanged connection, which allows pumping or draining process fluids from one section of the pipe to another. This flanged feature also allows the user to meter the flow of a pipeline from full flow to shut off. For bypassing damaged sections of pipeline. Flanged and threaded connections available.

Split Plug
The specialty plug, "SEALFAST™" Split Plug, for use where access to pipe is limited (manholes, manways, etc).

specialty plugs


Multi Seal
The "SEALFAST™" Multi Seal is used in Applications where redundant sealing means are required.

Square and irregularly shaped
The "SEALFAST™" Square and irregularly shaped are available upon request from sizes 3" through 30 feet. These plugs which are built to your size/configurations can be used in doors, tunnels, channels, aquaducts or any size/shape opening during construction or maintenance outages.

Multi-Size
The "SEALFAST™" Multi-Size for testing joints in tapered pipe sections or reduced pipe sections.

Remotely-Installed Plugs
The "SEALFAST™" Remotely Installed Specialty Plugs can be ordered to be installed remotely from a dry/safe location. Consult factory for details.

Fail-Safe Plugs
Fail-safe specialty plugs are spring loaded to seal themselves, and require the application of air or hydraulic pressure to unseat the plug for removal.

For more information on SEALFAST™ Design, click here.


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