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The cement-based Sindanyo® high temperature insulation boards are reinforced with specific fibres. They have been specially created to deliver outstanding performance in difficult thermal and electrical applications. A non-asbestos, non-combustible product with good machineability is Sindanyo®. When a superior, sturdy, and stiff material is needed, this insulating board is a well-liked alternative. It comes in two grades: L21, which is primarily used as an electrical insulator, and H91 (commonly used as a heat insulator).


Rollers, pusher blocks, door insulation, furnace insulation, exhaust systems, forging of ferrous and non-ferrous metals, press tools.

Key Features

  • Temperature: up to +230°C (Sindanyo® L21), up to +700°C (Sindanyo® H91).
  • Easily machined.
  • Strong and rigid.
  • Excellent insulation properties.
  • Low thermal conductivity.
  • High strength at high temperatures.
  • Suitable for machined components.
  • Resistant to most acids and alkalis.
  • Sindanyo® L21 is primarily used as an electrical insulator.
  • Sindanyo® H91 is used more as a heat insulator.

Technical Specification:

Examples of our Sindanyo® Machining

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