Hi-Temp CartridgesThe ruggedly constructed, high watt density Hi-Temp Cartridge heaters provide excellent heat transfer efficiency, high operating temperature (up to 100 watts per square inch, depending on application) and long life.The Hi-Temp Cartridge is made to withstand a sheath temperature of up to 1400 F (760 C), internally up to 1600 F (871 C). Its swaged construction allows for minimal air gaps, providing superior heat transfer and resistance to impact and vibration. Dual voltage and three phase are available on selected diameters of the Hi-Temp.