Metric FIREROD Heaters

Zesta Watlow Metric FIREROD Heaters
Zesta Watlow Metric FIREROD Heaters
The Watlow FIREROD® not only sets the industry standard for cartridge heaters, it continues making improvements in construction and design. One improvement is the metric FIREROD. It is a variation of the FIREROD cartridge heater which was built to meet the exacting specifications of the global market.
Like its counterpart, the metric FIREROD consistently outperforms other cartridge heaters because of its design solutions such as exclusive resistance wire winding process. Plus details, like bringing the resistance wire closer to the sheath and compacting the MgO insulation, maximize heat transfer. The end result is longer service life and better efficiency

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

Nickel-chromium resistance wire precisely wound and centered in the unit
  • Assures even, efficient distribution of heat to the sheath
Conductor pins metallurgically bonded to the resistance wire
  • Ensures trouble-free electrical continuity
Magnesium oxide insulation of specific grain and purity swaged to the proper density
  • Results in high dielectric strength and contributes to faster heat-up
Incoloy® sheath
  • Resists oxidation and corrosion from chemicals, heat and atmospheres
  • Able to withstand very high temperatures
Minimal spacing between element wire and sheath
  • Results in lower internal temperature, providing the ability to design with fewer or smaller heaters that operate at higher watt densities
  • Faster startup and longer life


  • Semiconductor chamber heating
  • Semiconductor wafer lead connection
  • Semiconductor wire and die bonding
  • Freeze protection and deicing of equipment in cold climates or applications
  • Humidity control
  • Patient comfort heating used in medical devices
  • Mold die and platen heating
  • Seal bars used in packaging equipment
  • Test sample heating in gas chromatography equipment