Message from Technetics Group Regarding the Coronavirus
Metal Bellows

Learn more about our solutions and value-added services.

Contact Us

BELFAB® Edge-Welded Metal Bellows

Technetics Group brings over 60 years of experience to designing, testing and manufacturing edge-welded metal bellows for critical applications.

Technetics Group designs and manufactures bellows for the most demanding applications. Each design is customized to meet your specific application parameters and operation requirements. Our best-in-class engineering teams bring component and system know-how, embedded with a culture of continuous improvement, to solve your applications problems and support your schedule from prototype to production.

As a forerunner in the development of this technology, we continually work to advance the state of the art by engineering unique design solutions that solve critical needs within complex mechanical systems. We also offer contract assembly services including design, fabrication, welding, upper-level assembly, testing and packaging. A certified Class 100/1000 clean room assembly environment is available as required. As an ISO 9001-certified organization noted for world class cellular manufacturing, Technetics Group has built its reputation on a foundation of total quality achievement.


Features and Benefits

  • Wide range of materials and configurations to choose from
  • High spring rate, very low tolerance for axial displacement
  • Low magnetic permeability
  • Corrosion resistant
  • 0.0015” to 0.02” diaphragm thickness
  • 1/4” to 18” outer diameter
  • Vacuum pressure to > 1,000 psi
  • Cryogenic temperatures to 1800°F
  • Permit flexible engagement and misalignment with positive spring force machined bellows 
  • One-piece construction (flanges included)
  • Variable wall thickness and thick wall possible 


Applications Include:

  • Aerospace: reservoirs, toggle switches, cold plate assemblies, fuel drains, engine kiss seals
  • Oil & Gas: actuators, connectors, couplings, feed throughs, gas lines, reservoirs, sensors
  • Semiconductor: actuators, beam lines, connectors, feed throughs, leak detectors, sensors, wafer handlers
  • Medical: batteries, cardiovascular devices, implants, drug delivery, monitoring devices, vacuum pumps, valves


For more information on BELFAB® Edge-Welded Bellows and how Technetics can custom-engineer a solution for your application, contact us.