Expanded Perlite & Sodium Silicate


Expanded perlite is a thermal insulation, also known as sodium silicate, which acts as a thermal and acoustic insulator. Among its characteristics, it is a rigid insulation, fire resistant, extremely lightweight and has a minimal risk of water absorption.

This thermal insulation is reinforced with fibers to provide greater mechanical resistance and is ideal for systems with high temperatures, since it has an operating temperature range of up to 650ºC (1200°F).

  • Expanded perlite or sodium silicate can be found in presentations such as preformed in half shells for pipes, or plates for equipment.
  • Meets ASTM C-610, C-795 MIL24244 and complies with UL-1709 for resistance to self-ignition.

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