Details

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WEH® Plug TW04

For Pressure and Vacuum Sealing of Components with Male Threads
Manual Actuation | Vacuum to 345 bar max

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The WEH® Plug TW04 is specifically engineered for pressure and vacuum testing applications on components with external (male) threads—providing a leak-tight seal up to 345 bar (model-dependent). Designed for quick, tool-free operation, it eliminates the need for wrenches, sealing tapes, or other consumables, making it a cost- and time-saving solution for demanding industrial test environments.

Simply hand-tighten the plug onto the threaded port until the integrated O-ring seal contacts the component to establish a pressure-tight connection. Durable NBR seals and a robust stainless steel body ensure a long service life, and the plug’s modular design allows for easy seal replacement, reducing equipment downtime.

The TW04 is available as a connector (with media inlet) or a plug (sealing only) version, offering flexibility across various testing applications.

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Technical Specifications

Parameter	Details
Max. Operating Pressure (PS)	Vacuum up to 345 bar (model-dependent)
Temperature Range	+5 °C to +80 °C
Leak Rate	1 x 10⁻³ mbar x l/s
Actuation	Manual (hand-tightening)
Material	Corrosion-resistant stainless steel
Sealing Material	Front seal of NBR or polyurethane

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Key Features

• No tools required – pressure-tight sealing by hand

• Seals without sealants or tape – reducing consumables

• Corrosion-resistant stainless steel – for durability in harsh environments

• Wear-resistant seals – long service life, simple replacement

• Saves time and reduces downtime during test procedures

• Available in plug or connector variant – for flexible testing or sealing requirements

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Applications

• Pressure and vacuum testing of pipes, tubes, valves, fittings, hydraulic systems, and more

• Used in industrial leak testing, hydraulic and pneumatic testing, and vacuum integrity testing

• Ideal for maintenance, R&D, and automated test benches (for connector version)