Milled Groove Metal Tubular Heaters

Tubular Heater CALROD / WATROD Single- and Double-Ended Elements.  Versatile and economical, the tubular heating element lends itself to virtually the entire range of immersion and air heating applications.

Double-ended tubular heater elements can be formed into spirals, compounds, multi-axis, and multi-planes from 36 common bend configurations. Custom bending with tighter tolerances can be made to meet specific application needs.

Please see the pictures and descriptions below for all the options:

We can ship any of the above formations from stock by using a modified stock unit.  If we do not have the right tubular calrod in stock, we can ship a custom made unit quickly. Finned or Non-finned.

We stock and supply various diameters, voltages, and watt density to cover the majority of application needs.


A variety of mounting and termination options are available.


Performance Features

      • Even heat distribution for optimum heater performance
      • Resistant to moisture contamination
      • Silicone seals rated to 390° F (200° C)
      • MgO insulation filled sheath maximizes dielectric strength, heat transfer and life
      • Variety of sheath materials
      • 36 standard bend formations

Tubular Heater Applications:

  • Air heating applications
  • Immersion heating
  • High temperature ovens and furnaces
  • Radiant heating
  • Drying
  • Environmental – VOC abatement
  • Process air heating (duct heaters, circulation heaters)
  • Vacuum appliances
  • Flue gas cleaning (desulphurization)
  • Fluidized beds