QST Split Sheath Insertion Heaters

  • 3/8 - 1 Inch Diameter
  • 5 - 60 Inch Lengths


  • Split Sheath design
  • Improved conductive heater
  • Easily inserted and removed from long holes
  • Incoloy® Sheath for long life at extreme temperatures
  • Compacted to maximum density for excellent element to sheath heat transfer and dielectric strength


Etirex cartridge heaters are most frequently used for heating metal parts by insertion into drilled holes. The QST Split Sheath industrial heater is designed especially for platen, die or mold commercial heating applications where the holes are poorly drilled or worn through age. Independent expansion of each section of the QST when energized, creates intimate contact with the wall of the hole.

To Order:

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Standard models are assembled to order. See catalog page PDF in Resources section above for available configurations. Custom designs are available to your industrial heat application. For more information, please contact your local Chromalox representative by clicking "Request a Quote" or calling 800-443-2640.