Dalfratex® is a range of inorganic fibres and textiles that are capable of operating continuously at 1000°C and up to 1600°C for limited periods.

It is available in many forms such as:

  • Textile cloths,
  • Tapes,
  • Sleevings,
  • Cords,
  • Braided packings,
  • Ropes,
  • Bulk fibres & batts.

They will not melt or vaporize until temperature exceeds 1700°C, and have a high resistance to thermal shock.

Dalfratex products also provide flexible electrical insulation at temperatures as high as 1000°C. They are composed of continuous filaments of amorphous silica, which combine the flexibility of fibres and textiles, with the refractory properties of silica.

dalfratex
In order to service the needs of a wide range of applications the majority of Dalfratex products are available in two basic forms – standard and pre-shrunk. The standard form shrinks during initial heating and products of this type have letter ‘U’ incorporated into the code number. As their name implies, the pre-shrunk forms have been factory treated to confer better dimensional stability in high temperature use.

In addition to these forms a wide range of sacrificial organic finishes are available which may be applied to particular products where required for specific end uses.

Typical Applications:

  • Aerospace (gas turbine rocket engines)
  • Metallurgical/steel production
  • Glass manufacture
  • Fire protection
  • Electrical heating
  • Pipeline and vessel fabrication
  • Gas production
  • Nuclear power
  • Electricity generation
  • Petrochemical

Features:

  • Low thermal conductivity
  • Low heat storage
  • Reduces fume emission around refractory
  • Excellent thermal shock resistance
  • Resistance to gas velocity
  • Easy to install
  • Adheres to most ceramic and metallic surfaces
  • Excellent corrosion resistance
  • Inert to most chemicals
  • Impermeable to molten aluminium, zinc, copper & lead
  • Contains no asbestos

Chemical Analysis – Calcined Basis

Silica                                      98.57%

Alumina                                  0.47%

Iron Oxide                              0.08%

Lime                                       0.05%

Magnesia                               0.07%

Titania                                    0.30%

Alkalis                                    0.13%

Boric Oxide                           0.06%