Hightech-Insulatin Material for extreme loads

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Ranges of application

GL® M is applicable in thermal high stressed presses and punch units, in the glass making industry, in welding plants and for extrusion dies.

Special material characteristics

  • very high continuous usage temperature
  • very high compressive strength
  • excellent insulation effect


The grade GL® M offers a higher usage temperature than other glass fibre reinforced thermosetting materials. Compared to fibre cement materials GL® M can be used for applications with higher mechanical loads.

Temperature resistance (short-term) 600 °C 1112 °F
Temperature resistance (long-term) 400 °C 752 °F
Thermal conductivity 0.3 W/mK 0.17 btu/ft h °F
Coefficient of linear expansion 10·10-6 10·10-6
Compressive strength (room temperature) 400 N/mm2 58015.1 psi
Flexural strength 200 N/mm2 29007.5 psi
Compressive strength (200°C) 250 N/mm2 36259.4 psi

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This finishig process was especially developed for the highest requirements on precision.