MICROTHERM® (SEMI-)OVERSTITCHED are custom-made, flexible microporous insulation panels, ideally suited for high temperature applications with complex 2D and 3D shapes and limited available space. These panels are produced in a glass cloth outer envelope, making them clean and easy to handle and install.

MICROTHERM® (SEMI-)OVERSTITCHED is available in two temperature grades (for 1000 °C and 1200 °C). The 1000 °C type is also available in a hydrophobic version that is ideal for applications where contact with liquid water or condensation (dew point) is possible.

Stitching is one-directional (2D flexure) for MICROTHERM® SEMI-OVERSTITCHED and two directional (3D flexure) for MICROTHERM® OVERSTITCHED. The formulation is an opacified blend of filament reinforced pyrogenic silica or alumina for the 1200 °C grade.

Further Information


  • Process piping and pipe supports;
  • Refractory lined piping;
  • Exhaust systems;
  • Jackets and cassettes;
  • Passive fire protection


  • Excellent thermal performance;
  • Flexible, thin and lightweight;
  • Designed to customer specifications;
  • Resistant to shock and vibration;
  • Non-combustible

Please note
All physical and mechanical values are averages based on standard production and tested according to internal procedures. The typical values are given for guidance. The figures can change dependent on the test methods used. If a particular value is of prime importance for a specification, please consult Promat Technical Department.