AES ceramics: 300 °C above standard
Alkaline-earth-silicate fibers – commonly known as AES fibers – belong to the group of high-temperature-resistant fiberglass.

The new AES fiber, supplied as type 1260 ceramic fleece, is designed for temperatures of up to 1260°C.
They consist of amorphous fibers manufactured through the fusion of a mixture of calcium oxide, magnesium oxide, silicon dioxide and zirconium oxide. Thanks to their properties as technical materials, AES fibers are also utilized in the aircraft and aerospace industries. They are mainly employed as an insulating material suitable for applications with operational temperatures of up to 900 °C.
However, the new AES fiber from Kager, supplied as type 1260 ceramic fleece, is designed for temperatures of up to 1260 °C. This white, lightweight material is a thermal isolator offering great flexibility and high surface resistance (hardly any spalling). It also impresses with high resistance to frequent temperature fluctuations. It is therefore an ideal solution for heat insulation, soundproofing and packaging, and also finds use as a gas filter and sealing material. AES fibers, such as type 1260 ceramic fleece from Kager, support the implementation of lightweight design and construction principles in the manufacture of high-temperature-resistant units. They are not only lightweight themselves, but also enable production with low wall thickness. Kager supplies 600 mm wide roles with lengths of 3.6 m and 7.2 m. Users have the choice between three thicknesses of material – 12.5 mm, 25 mm and 50 mm.
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