Diaphragm Bellows

HYDRA® diaphragm bellows are made of diaphragm discs welded together in pairs. They have high specific expansion compensation (up to 80% of the overall length) and a very low spring rate. However, their pressure resistance is limited.

Diaphragm bellows are used in the vacuum technology, aerospace, space, medical technology sectors, within special valve, sealing applications and as expansion elements in oil cooled high voltage switchgear.



  • Very high flexibility / low stiffness
  • vacuum tightness
  • temperature resistant
  • corrosion resistant
  • ageing resistant


Witzenmann Metal Products Mexico

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