Product Description

FXL is an intumescent material which expands without any pressure in the case of fire. As a fibreless material, FXL has good mechanical properties. In case of a fire, the material forms, even at high temperatures (900°C), a stable, micro porous and heat-shielding layer.

Test Certificate

ABZ  DIN 4102. 
Warrington Fire: BS 476: Part 22:1987


Expansion start  approx. 200°C
Gross density  1,3 g/cm³
Expansion volume  approx. >25-fold
Expansion pressure  pressureless
Colour  white


FXL has been developed for general sealing applications. The material is suitable for applications where a lack of pressure is indicated.

  • Filling joints between fire-resistant doors and frames, roller-shutters, windows and adjacent walls
  • Jointing wall junctions and filling cavities betweens junctions and cable ducts
  • Insulation of steel

Available sizes

FXL can be supplied in rolls or strips, and can be supplied with a self-adhesive layer.

  • Thickness: ranging from 0.8 – 2.5 mm
  • Width: between 9 and 340 mm.

The information in this document is based on our knowledge and experience to date. This information does not release the user from carrying out independent tests and trials due to the various influences when processing and applying our product. It is not possible to derive a guarantee of certain properties of suitability of the product in a concrete application case based on our information. All the descriptions, drawings, photographs, data, conditions, weight etc. included may change without previous announcement; they do not constitute the contractually agreed property of the product. The recipient of our product is responsible to observe any trade mark rights and existing laws and regulations.