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The Bourdon D042 / D043 / D044 diaphragm seal with threaded process connection is used to protect pressure gauges from high temperatures and aggressive, crystalizing, or corrosive fluids. Chemical seals can be mounted to mechanical pressure gauges, switches, or transmitters directly or with a flexible capillary. The filling fluid of the measuring system must be compatible to the application. The simple, all welded design allows the building of cost effective measuring systems with a high reliability for many different applications.


  • Oil and gas
  • Chemical
  • Water and wastewater
  • Energy
  • Transportation and logistics
  • Machinery