Fiberfrax Durablanket® Z | Ceramic Fiber Mats

Fiberfrax Durablanket® Z | Ceramic Fiber Mats

Durablanket® ASW high-temperature wool insulation materials are firmly needled insulation mats made from spun Fiberfrax ASW high-temperature wool.

1400°C KFT
Ceramic fiber | Aluminum silicate wool
Mat (blanket)
Thickness (mm)
6mm 10mm 13mm 19mm 25mm 38mm 50mm
Density / volume weight (kg / m³)
64 kg / m³, 96 kg / m³, 128 kg / m³, 60 kg / m³

Products Products

Category: Fiber blankets

Tags: Matte (blanket)


  • Strength

    Excellent handling / processing strength.

    Heat resistance

    Resistance to temperature changes & resistance to chemicals.

    Thermal counductivity

    Low thermal conductivity & heat storage.


    Mats (blankets) made of high temperature wool are needled lightweight mats made of ceramic (ASW/RCF) high temperature wool (HTW) and provide an effective solution for a wide range of thermal insulation applications. They are characterized by excellent insulating properties, high resistance to chemicals, elasticity and dimensional stability. They are exclusively inorganic and therefore do not generate smoke or fumes when exposed to heat. They are available in a wide range of densities and thickness combinations, making them one of the most versatile product groups on the market.


    High temperature wool made of ceramic fibers, also known as ASW (aluminum silicate wool) or RCF (Refractory Ceramic Fiber), have been used for years as the standard fiber type for insulation solutions up to 1260 ° C. Consisting of a mix of aluminum oxide (Al2O3) and silica (SiO 2)2), the fibers offer not only high temperature resistance but also good chemical and mechanical properties.

    By further refining the fiber with zirconium oxide (ZiO2), a temperature resistance of up to 1400 ° C can be achieved.


    Unifrax® is one of the world's leading manufacturers of high-performance specialty fibers and inorganic materials that are used in industry, the automotive sector and fire protection. Our goals, philosophy and values build on our efforts to manufacture high quality products that help our customers save energy, reduce pollution and improve fire protection.

    Fiberfrax Durablanket® S | Ceramic Fiber Mats

    Product variations

    DOM insulating feeder

    Roll goods

    Fiber mats are sold as roll goods as standard. The roll length depends on the selected thickness. As a standard width, we have 610mm wide rolls from stock. Double widths are available on request.



    We manufacture molded parts according to your specifications. The roll goods are made using

    • Water jet

    • Punching

    • Plotting

    brought into the right shape for you.


    Fiber modules

    We manufacture fiber modules according to customer specifications that are designed for the insulation requirements of industrial ovens, kilns and heating devices.



    Chemical Analysis 

    SiO2: 52,0 – 56,0
    Al2O3: 28,0 – 32,0
    ZrO2: 14,0 – 18,0
    Alkalien: <0,25
    Fe2O3 + TiO2: <0,2
    Physikalische Eigenschaften
    Farbe Weiß
    Klassifizierungstemperatur (°C) 1400
    Schmelzpunkt (°C): 1740
    Mittlerer Faserdurchmesser (My): 3,25
    Spezifische Wärmekapazität (Kj/kg*K) 1035
    Dauerhafte lineare Schrumpfung (%) nach 24
    1400 °C: 2,7
    Raumgewicht (kg/m³) 96 128 160
    Wärmeleitfähigkeit (W/mK)
    800°C 0,24 0,19 0,18
    1000°C 0,34 0,27 0,25
    1200°C 0,44 0,36 0,33
    Zugfestigkeit (kPa) 70 90 110


    Durablanket® ASW high-temperature wool insulation materials are firmly needled insulation mats made from spun Fiberfrax ASW high-temperature wool. The extra long spun high-temperature insulating wool, which is needled crosswise in a unique manufacturing process, creates a mat of exceptional strength for better handling / processing. Fiberfrax Durablanket® S insulation mats are based on fibers made of aluminum silicate wool / refractory ceramic fiber (ASW / RCF) and are characterized by a temperature resistance of up to 1260 ° C.


    • Low thermal conductivity & heat storage
    • High tensile strength & elasticity
    • Thermal shock resistance & durability
          to chemicals
    • Good sound absorption
  • Downloads

    Datasheet Fiberfrax® Durablanket® Z

    Product properties, typical applications and availabilities.


  • KS Kneissl & Senn Technologie

    Gasser GmbH

    Gasser - Handel mit Gießerei- und Stahlwerksbedarf Gesellschaft m.b.H. has been active as a company since 1925. Over time, various commercial agencies and products produced under their own brand were added. Today, the company concentrates 100% on products for iron and non-iron foundries and manufacturers and processors. Since 2017, the company has been part of the SENN Group and has also been based in Erl since 2022.

    Since 2018, the company has been certified according to ISO9001, currently according to the 2015 revision of the standard.

  • Productoverview

    Refractory | Foundry supplies | Accessories



ATTENTION - Sale to professionals only

Gasser GmbH Foundry Technology

Your specialist for foundry supplies, refractory, and high-temperature resistant insulation solutions.

© Gasser GmbH Foundry Technology
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