Insulfrax® Fibre

Insulfrax® Fibre is a synthetic vitreous fibre based on a calcium, magnesium and silicate composition. A high fibre index (low percentage of unfiberised particles) provides the excellent thermal performance associated with traditional fibrous insulating materials. Insulfrax fibre is available in both chopped (3011) and unchopped (3010) grades. This fibre is the feedstock used to manufacture the Insulfrax product line, and it is ideally suited for conversion to boards, coatings and vacuum cast shapes. Insulfrax Fiber was developed for the temperature range extending from cryogenic levels through to 1100 °C. The wide operating temperature range combined with superior wetting resistance to molten aluminium alloys makes this product ideal for conversion to vacuum-cast shapes for metal transfer in the aluminium industry.

Typical applications:

  • Expansion joint packing
  • Refractory construction
  • Conversion to vacuum-cast tap-out cones, precast molten metal distribution shapes, high-temperature boards, fireplace logs
  • Tube seal packing
  • Manufacture of cements, mouldables and coatings
  • High-temperature papers and felts
  • Specialised vacuum-cast shapes

Insulfrax low bio-persistent products are designed to have enhanced in-vitro solubility characteristics, which enable Insulfrax products to meet European regulatory requirements (Directive 97/69/EC) for synthetic vitreous fibres.


Safety Data Sheets

Insulfrax® Fibre

Product Information Sheet


New Insulfrax LTX Products


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