Ceramic fiber made of silica and aluminum/magnesium oxides. Extremely resistant to high work temperatures (up to 1200°C) maintaining a great stability when exposed to the fire, chemically stable, electrically and acoustically insulating. These textiles also have a low density and a little organic part (which disappears at low temperature).
They are available with internal glass fiber reinforcement (that will enhance the mechanical resistance to traction up to 650°C) or steel reinforcement (that will enhance the mechanical resistance to traction up to 1100°C).