HT FIREROD Cartridge Heaters

Zesta Watlow HT FIREROD Cartridge Heaters
Zesta Watlow HT FIREROD Cartridge Heaters
The Watlow® high temperature (HT) FIREROD® heater is specially designed for high temperature platen applications up to 1800°F (980°C). The HT FIREROD heater utilizes the same industry leading design principals used on all of Watlow’s FIREROD heaters.
Taking the cartridge hearter one step further Watlow developed the HT (high temperature) FIREROD. This unique twist on a cartridge heater enables the heater to withstand application temperatures up to 204°C (400°F) higher than the standard FIREROD

Watlow Firerod Datasheet (EN)
Watlow: Your Heat Solutions Resource Brochure (EN)

Watlow Firerod Fiche Technique (FR)
Watlow: Vos Solutions de Chauffage Brochure (FR)
Back to Firerod Cartridge Heaters

Product Features

High temperature seal
  • Reduces exposure to the atmosphere which minimizes oxidation of the winding wires and extends the life of the element
  • First 3 in. (76 mm) must be outside the platen in free air and less than 1000°F (538°C).
Incoloy® sheath
  • Resists oxidation and corrosion enabling more efficient heat transfer
High emissivity sheath
  • Provides better heat transfer and longer life

Product Specifications

  • Platen temperatures to 1800°F (980°C)
  • Maximum watt density to 100 W/in2 (15.5 W/cm2)
  • Maximum voltage 277VAC to ground
  • Length tolerance: +0, -4 percent standard diameters; +0, -8 percent for special diameter

Ordering information

Heater Catalogue Section


  • Thermo plastic
  • Super plastic forming of titanium aircraft parts
  • Diffusion bonding to laminate and shape titanium