Introduction to HTIW Products

Alkaline Earth Silicate Wool (AES)

Refractory Ceramic Fiber (RCF)

Polycrystalline Wool (PCW)


  • Made of synthetic vitreous and polycrystalline mineral wools
  • Defined by a classification temperature above 1832°F (1000°C)
  • Typically used at temperatures above 1100°F (600°C)
  • Necessary for many high-tech products due to their versatile characteristics
  • Essential for minimizing energy consumption and greenhouse gas emissions
  • Used at much higher temperatures than most other glass and rock wools


  • Some Common characteristics of HTIW:

  • High temperature resistance
  • Low thermal conductivity
  • Excellent thermal shock resistance
  • Chemically neutral
  • Great flexibility
  • Low thermal mass
  • Light weight


  • High Temperature Insulation Wools are part of a larger group of Synthetic Vitreous Fibers (SVF), which also includes fiberglass and mineral wool.




    Temperature ranges for the application of Inorganic Synthetic Mineral and High Temperature Insulation Wools.

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