Categories > Pipe test plugs

Mechanical Pipe Plugs - Air Pipe Plugs

WA.GP-Z "Version ll" mechanical pipe plugs for large diameter pipes







Mechanical pipe flow stops for longer term placement: reinforced back plates, provide up to 72 psi seals. Mechanical plugs do not require monitoring once braced in place, down stream work may be completed over an extended period.

Perimeter expansion seal versions or expanding disk seals, provide up to 160 feet water head pressures.

Mechanical pipe plugs may be left in place for the duration of the project, with no pressure monitoring.

Diver installed plugs are equipped with internal air chambers for buoyancy assistance. Mechanical pipeline plugs are an effective flow stopper.

The seal assembly may be EDPM elastomers, or NBR for oil/gas related projects. The material mainframe may be 304L stainless or 316L stainless.

WA-Gas mechanical pipeline plugs - three (3) inch to 20 inch.pipe-plugs-gas-pipes

Low Pressure gas pipe line flow stoppers, with NBR elastomer seals.

Mechanical Gas pipeline plugs can be used for PVC or steel pipes. 


Mechanical pipe plugs for small pipe diameters


Westatlantic WA.GP-Z (Version l) small pipe diameter mechanical pipe plugs - for extended pipeline maintenance work on small pipes. WA.GP-Z plugs may be fitted with a by-pass vent for by-pass or pipe testing. Fits all American or International pipe sizes up to 8 inch, 200mm. 14 psi plugs.

Corrosion resistant stainless steel compression plates, rubber seals may be EDPM. NBR or Silicone. Seals may be sized for bell end of spigot end.

Multi-service long life plugs for City works

GP-Z blind plugs are also used to seal wall cores for future pipe passage or through slap openings.

WA-GP-Z-DL pipe plugs prevent pipe flows up to 28psi - 2bar

Mechanical pipe plugs with inflatable annular seals.


Mechanical model plugs with stainless steel, aluminum or steel plate.

Mechanical plugs with annular pneumatic seals are a cost effective way to plug pipes. The elastomer expands against the pipe wall for an effective flow stopper.

Available in a range of diameters and configurations.

Test Plug PDF


Test Plugs Pneumatic Pipe Test Plugs 


WA-Pipe Plugs Inflatable units, are one piece construction, thick wall multi-use test plugs, durable and safe for the temporary blocking of pipelines. They have 2-3 times thicker rubber than other plugs.


Plugs are made in one piece without welds

Westatlantic Class test plugs are fiber reinforced for high strength with excellent resistance to wear and organic solvents. Plugs are made from natural rubber having a thickness of no less than 10 mm which is two to three times thicker than comparable products.

Westatlantic Plugs are thoroughly tested on all possible aspects before being delivered to our customers, guarantees a safe working environment.


Inflatable Pipe Test plugs are equipped with one or more flow through valves. The plugs are suitable for carrying out pressure tests with water or air in accordance with local standards.

The plugs can be used for bypass functions as well as pipeline testing. They are very robust and the couplings are of the high quality for a no leak around seal. 


Inflatable Pipe Plugs


Westatlantic pipe plugs are constructed with consideration of the safety of installers and personal working in or near the lines. Unique and specific production process guarantee safe and durable pipe plugs. 

See Complete data and sizing:














nbr-oil-gas-pipe-test-plugsTest pipe plugs - NBR rubber

Onshore - Offshore applications.

NBR rubber has a much better resistance against oil instead of natural rubber and suited to off-shore applications.

Resistant to oils, greases , hydrocarbons and dilute acids makes this plug particularity suitable for industrial sealing. 

Plugs are completely made of nitrile rubber (NBR) and reinforced with Aramid © cording. They are designed with a safety factor of 4x maximum pressure. For priority safe installation.

NBR rubber test pipe plugs are equipped with one or more flow through. These test pipe plugs are suitable for carrying out pressure tests with water or air in accordance with the local standard/Nitrile test pipe plugs can also be used for a bypass function as well.

NBR is resistant to oils, greases , hydrocarbons and dilute acids. This makes this plug particularity suitable for industrial or Petrol Chemical pipeline sealing. 

Please note that the chemical resistance will depend on various factors such as: the type, the temperature, the concentration, the duration of the contact. The operating temperature is limited to approximate. 100°C.

See Complete data and sizing:

Mechanical Test Plugs with wing nut tightness: 40mm to 450mm (1 1/2" to 18")

Zinc plated steel - aluminium-galvanized, rubber element seals. Butterfly fasteners, quick installation.








  • Aluminium Test Plugs – 40mm up to 600mm
  • Steel Test Plugs Double Seal - 40mm up to 450mm diameter
  • Galvanized Test Plugs up to 400mm
  • Aluminium Test Plugs Double Seal - 40mm up to 600mm diameter
  • Small Nylon Plugs
  • Super Nylon Testing Plugs
  • HDPE Test Plugs for Pressure Testing to 6 bar












Sizing Data mechanical plugs

Contact us: Westatlantic Tech Corp., 902 455 4455

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