Saffil® | Polycrystalline Mats

Saffil® | Polycrystalline Mats

Saffil mats are light, flexible mats needled with polypropylene threads made from high-purity polycrystalline wool.

1600°C Classification Temp.
Mat (blanket)
Thickness (mm)
13mm | 25mm
Density / volume weight (kg / m³)
96 kg / m³

Refractory Refractory

Subcategory: Fiber blankets

Tags: Mat (blanket)


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    Temperature resistance

    High temperature resistance up to 1600 °C.

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    Tensile strenght

    High tensile strength and resilience.

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    Thermal conductivity

    Low thermal conductivity.


    Mats (blankets) made of high temperature wool are needled lightweight mats 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.


    Polycrystalline wool (PCW Poly Crystalline Wool) consist of fibers with a very high alumina content (Al2O3 > 70% by weight %). They are produced from aqueous spinning solutions using the “sol-gel process”. During the subsequent heat treatment, the previously produced, water-soluble green fibers crystallize. Polycrystalline wools are generally used at operating temperatures> 1300 ° C or, in the case of critical chemical and physical application conditions, also at lower temperatures. The first production of polycrystalline wool can be traced back to the 1970s.


    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.

    Saffil® | Polycrystalline Mats

    Product Variations

    Cerablanket™ | Ceramic Fibre Mats

    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.

    Cerablanket™ | Ceramic Fibre Mats


    We manufacture molded parts according to your specifications. The roll goods are shaped via:

    • Water jets
    • Punching
    • Plotting
    Cerablanket™ | Ceramic Fibre Mats

    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
    Al2O3: 95,0 – 97,0 %
    SiO2: 3,0 – 5,0 %
    Others: <0,5 %
    Physical Properties
    Colour: White
    Classification Temperature (°C): 1600
    Specific warmth at 1000°C (J/kgK): 1000
    Density (kg/m3) : 96
    Medium fiber diameter (My): 3 – 4
    linear shrinkage (% after 24h)
    1500 °C: <4


    Saffil mats are light, flexible mats needled with polypropylene threads made from high-purity polycrystalline wool. The polypropylene threads allow a higher strength and flexibility of the mat. The temperature resistance is up to 1600 °C. Saffil mats can be used in a wide variety of applications. They are particularly suitable for applications where shot (melt beads) are not desired or where resistance to corrosion is important.


    • High temperature resistance (up to 1600 ° C)
    • Low thermal conductivity
    • no visible shot
    • Thermal shock resistance & durability
         to chemicals
    • High tensile strength and resilience
    • insoluble in water
    • suitable for facings and anchor modules
  • Downloads

    Saffil mat data sheet

    Product properties, typical applications and availabilities.


    Hoffmann product catalog

    Refractory | Seals | Foundry supplies | Conveyor chains | Chesterton


  • K. Hoffmann GmbH

    K. Hoffmann GmbH

    Since 1986, K. Hoffmann GmbH has been at home as a production company in the high-temperature sector. Specializing in vermiculite as the main material, we offer board products and shaped parts as mass-produced and cost-oriented quality goods, as well as complex custom-made products for industrial and home use for thermal insulation and fire protection technology!

    As part of the SENN Group, we have access to a broad network of specialized companies and their associated experience and products, enabling us to meet every requirement!


ATTENTION - Sale to professionals only

K. Hoffmann GmbH

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

© K. Hoffmann GmbH

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