Metal Diaphragm Assemblies

Custom diaphragms for critical applications

Sigma-Netics designs and manufactures custom metal diaphragms for when extremely accurate pressure versus deflection curves are required.


  • 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


  • Pressure and temperature sensing
  • Aerospace Instruments such as altimeters, airspeed, and Pitot Static pressure,
  • Aneroids for fuel to air mixtures, oxygen systems, and automatic deployment systems
  • Media isolators


  • Beryllium Copper, Ni-Span-C, 316L, 17-7PH, consult factory for other options
  • 1/2 to 3 in. standard size OD
  • 0.002 to 0.008 in. standard diaphragm thickness
  • Custom configurations and fittings available