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Blanking Plugs

Seal Unused Pneumatic and Vacuum Ports with Universal-Thread Plugs

Blanking plugs are used to close unused ports on pneumatic and vacuum components, helping keep systems sealed and protecting open connections from contamination.

The source description identifies a universal-thread design that can connect to female NPT, BSPT and BSPP thread forms, making the plugs useful for mixed-standard machine and maintenance environments.

Key Benefits

  • Closes unused pneumatic and vacuum ports
  • Universal-thread compatibility
  • Suitable for NPT, BSPT and BSPP female ports
  • Useful during machine commissioning and modification
  • Helps keep unused connections protected from dirt and debris

Common Applications

  • Pneumatic control valves
  • Vacuum components
  • Valve manifolds
  • FRL assemblies
  • Machine commissioning
  • OEM equipment maintenance

Frequently Asked Questions

What is a blanking plug used for?

It closes an unused threaded port in a pneumatic or vacuum component.

What thread types are listed?

The source description identifies compatibility with female NPT, BSPT and BSPP threads.

Can blanking plugs be used on vacuum components?

Yes. Vacuum components are specifically identified in the source description.

Why close an unused port?

An open port can leak air or vacuum and can allow dirt or debris into the component.

Can a plug be used during machine commissioning?

Yes. Blanking unused ports is common while circuits are being built, tested or modified.

How do I choose the correct plug?

Confirm the female port size, thread form, pressure or vacuum conditions and material compatibility.

Are universal threads the same as one standard thread?

No. They are designed to provide compatibility across multiple common female thread forms; verify the exact product and port before installation.

Should thread sealing be checked?

Yes. Use the sealing method specified for the plug and the mating component.

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