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Pyrotek ISOMAG® 175 Structural Insulation Board


Subcategory: Oxide, Magnesium; Oxide, Silicon; Oxide

Material Notes:
Isomag® 70 is a high strength insulating board suitable as an electrical insulator or a thermal barrier material in a variety of industrial applications. Its magnesia silicate based formulation provides a product with an outstanding combination of high compressive strength and low thermal conductivity. Incombustible, Isomag® 175 is totally free of asbestos and may be cut or machined with readily available tools.


  • Platen press insulation
  • Arc chutes
  • Resistor grids
  • Induction furnaces
  • Pot pads
  • Buss support insulation
  • Foundry bottom boards
  • Blow boards


  • Low heat loss at higher temperatures
  • Low shrinkage at temperature use limit
  • High temperature rating
  • Asbestos and ceramic fiber free

Information provided by Pyrotek.

Available Properties
  • Density
  • Specific Gravity
  • Water Absorption
  • Open Porosity
  • Flexural Strength
  • Compressive Strength
  • Izod Impact, Notched
  • Volume Resistivity
  • Dielectric Constant, Low Frequency
  • Dielectric Strength
  • Dielectric Breakdown
  • Dissipation Factor
  • Arc Resistance
  • Thermal Conductivity at Elevated Temperature
  • Maximum Service Temperature, Air
  • Flammability, UL94
  • Shrinkage
Property Data

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