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  Watlow Mineral Insulated Strip Heaters

Watlow's MI Strip Heaters

Product Spec Sheet



 The Watlow MI Strip is a thin, responsive heater that sets unmatched standards for performance and durability. It makes use of the most advanced heater construction techniques, including embedding a nickel chromium element wire in Watlow's exclusive mineral insulation. Only 0.042 inches (1.067 mm) thick, this layer of insulation brings the element wire closer to the heater sheath. The result is heat flows easily from the element wire to the sheath, thus allowing the wire to run cooler than conventional heaters.

Performance Capabilities


  •  Sheath temperatures to 1400F (760C)
  • Watt densities to 100 W/sqin. (15.5 W/cm2)
  • Maximum voltage 480V~(ac)




  •  Higher watt densities than any other strip heater contribute to faster heat-up.
  • Exclusive mineral insulation combines high dielectric strength and superior thermal conductivity which transfers heat rapidly to the sheath.
  • Stainless steel sheath is welded together at strategic points to maintain the high compaction of mineral insulation and produce a rigid heater.
  • ULR component recognition is available in 250V~(ac) or less.