Edge Welded
Bellows Assemblies

Customizable metal bellows with a small package size

For high vacuum, aerospace or more stringent industrial applications, our edge welded bellows assemblies provide high over pressure capabilities and the most stroke per package size of any bellows technology.

« Metal Bellows / Edge Welded
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  • 1/2” to 5” OD, custom ODs available
  • 100% helium leak check throughout process
  • Rapid prototyping available
  • Ideal for low volume applications

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  • Application engineering support throughout the design and prototype process
  • 100% leak checked assemblies
  • Prototype and fixture manufacturing on-site for quick turnaround on samples and proof of concepts
  • Cost competitive
  • Low cost to entry
  • Stocking Programs for Kanban releases
  • Application verification through in-house life testing and design verification testing

Available Options

  • AM350, 316L, Inconel, Hastelloy, consult factory for other options
  • 1/2 to 5 in. standard sized OD
  • 0.002 to 0.008 in. standard diaphragm thickness
  • Custom end configurations
  • 100% Helium Mass Spectrometer leak check at multiple stages of production


  • Flexible seals
  • Vacuum seals for microchip manufacturing equipment
  • Accumulators
  • Valve stems
  • Pressure and temperature sensing
  • Aneroids for fuel to air mixtures, oxygen systems, and instrumentation

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[email protected] | 973-616-6900

2 North Corporate Drive, Riverdale, NJ 07457 | Sigma-Netics, Inc. © 2021