Insulfrax® Fiber

Insulfrax® Fiber is a man-made vitreous fiber based on a calcium, magnesium, silicate composition. A high fiber index (low percentage of unfiberized particles) provides the excellent thermal performance associated with traditional fibrous insulating materials. Insulfrax fiber is available in both chopped (3011) and unchopped (3010) grades. This fiber 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 of extending from cryogenic levels through 1100°C (2012°F). The wide operating temperature range combined with superior wetting resistance to molten aluminum alloys makes this product ideal for conversion to vacuum cast shapes fro metal transfer in the aluminum 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, moldables and coatings
  • High-temperature papers and felts
  • Specialized 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 man-made vitreous fibers.


Safety Data Sheets

Insulfrax® Fiber

Product Information Sheet


New Insulfrax LTX Products


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