Electroformed Nickel Bellows Assemblies

Customizable seamless bellows assemblies

Sigma-Netics electroformed nickel bellows assemblies are available in a wide variety of sizes and configurations.  Their unique manufacturing method allows for extremely low spring rates, miniature sizes and more custom applications.


  • 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


  • Medical applications for implants and special equipment
  • Temperature sensing
  • Precision sensing for extremely low pressure applications
  • Aneroids for fuel to air mixtures, oxygen systems, turbo over pressure


  • From 0.030” to 6” in diameter
  • Extremely low spring rates
  • Joining Methods
    • Soldering
    • Brazing
    • Welding
    • Epoxy
  • Joint verification
    • Helium mass spectrometer
    • Bubble testing
    • Pressure aging
  • Evacuated for sensing altitude