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  • High temperature iron-chrome-aluminum (ICA) resistance elements
  • Available in five element configurations
  • Lightweight, low-density alumina-silica composition
  • Operating temperatures to 2200°F (1204°C)
  • Low mass ceramic fiber insulation of 10 to 15 lb/ft3
  • Works directly off common power-line voltages


The Watlow Ceramic Fiber heater offers some of the highest temperature heating element capabilities of any Watlow heaters. Watlow ceramic fiber heaters are made by integrating an iron-chrome-aluminum (ICA) heating element and ceramic fiber insulation. The ceramic fiber insulation isolates the high temperatures inside the heating chamber. The heaters are low mass, fast heating, with high insulation values and the self-supported heating elements. Many applications can benefit from the convenience of the Watlow ceramic fiber heater's heating element and insulation combined into one package.

Ceramic fiber is an insulation made of an alumina-silica composition, held together by an inorganic binder. It's commonly used as a refractory material. Its lightweight, low-density properties make it ideally suited for high temperature applications requiring low thermal mass. The design of the Watlow ceramic fiber heater allows operating temperatures as high as 2200°F (1204°C) and watt densities ranging from 5 to 30 W/in2 (0.8 to 4.6 W/cm2)

Applications for the Watlow Ceramic Fiber Heater:

  • High temperature furnaces
  • Metal melting, holding and transfer
  • Semiconductor processing
  • Glass, ceramic and wire processing
  • Analytical instrumentation
  • Fluidized beds
  • Laboratory and R&D
  • Other high temperature process applications

Ordering Information

Please contact us to order a Watlow Ceramic Fiber heater. To help us determine which Watlow heater will best satisfy your application requirements, please determine as closely as possible the size, shape, voltage, heating area, wattage/watt density, operating temperature, and required options of the heater you will need.