Filoform FiloSeal+HD Fire Duct Seal (280070, 280080, 280090, 280100, 280110, 280120)

Product overview

Filoform FiloSeal+HD FIRE Duct Sealing System is a new highly certified fire, gas and water sealing system for both ducts and transit frames. Suitable for sealing empty or any cable/ pipe configuration contained in one duct and also allows easy re-entry of the seal to add or remove cables or pipes as required.
Filoform Part Numbers: FiloSeal+HD FIRE – 75mm > 110mm (280070), FiloSeal+HD FIRE – 125mm > 160mm (280080), FiloSeal+HD FIRE – 180mm (280090), FiloSeal+HD FIRE – 200mm (280100), FiloSeal+HD FIRE – 225mm (280110), FiloSeal+HD FIRE – 250mm (280120).

  • Up to 4 hours fire resistance in transit frames (single side)
  • Up to 4 hours fire resistance in ducts
  • Tested to BS EN1366-3 2009
  • Tested to AS1530.4-2014 (Australian / New Zealand fire standard)
  • Tested to London Underground – LUL S1085
  • Tested to European rail applications – BS EN 45545
  • Tested to French rail standard CIt NF F16-101
  • Tested to Smoke index – ISO 5659-2:2012
  • Tested to Oxygen index – BS EN ISO 4589-2:1999
  • Up to 2 bar pressure resistance
  • 100kg pulling force on the cables when sealed
  • 10xd at 45º, with 1 bar pressure bending test
  • Engineered duct sealing solution

If Fire resistance is NOT required, click here for FiloSeal+HD.

Application Process

FiloSeal+HD FIRE provides a strong support system using the fire resistant hexagonal blocks made of our specially formulated material called ‘Formite’ which builds up like a honeycomb structure.

FiloSeal+HD FIRE Blocks

The Filoform duct sealing system FiloSeal+HD FIRE uses our fire-resistant MD+ sealant which is easily applied from a standard skeleton gun. The high quality, one component, flexible sealant “MD+” is based on a silicon compound that cures with air (Humidity).

After application and full curing the thixotropic MD+ forms a plastic elastomer mass with special qualities effectively sealing and bonding, while providing a high level of durability.


Filoform FiloSeal+HD FIRE (280070, 280080, 280090, 280100, 280110, 280120) is very easy to apply regardless of the type of cable scenario in the cable ducts as it uses strong, but flexible hexagonal blocks to support the cable and provide a strong backing for the seal.

The unique design of the hexagonal blocks makes positioning and separation of the cables very simple while also providing a strong backing for the MD+ to be applied on.

Filoform FiloSeal+HD FIRE Duct Seal – Key Features

  • Fire resistant – tested to BS EN1366-3 2009
  • Fire resistant – tested to AS1530.4-2014 (Australian / New Zealand fire standard)
  • Tested to London Underground – LUL S1085
  • Tested to European rail applications – BS EN 45545-2:2013
  • Tested to French rail standard CIt NF F16-101
  • Tested to Smoke index – ISO 5659-2:2012
  • Tested to Oxygen index – BE EN ISO 4589-2:1999 (High Oxygen index)
  • WIMES Compliant (3.02 2013 b)
  • Flexible, one component fire resistant adhesive and sealing compound in a cartridge – (310ml)
  • Kits are complete with backing and mastic to fill an empty duct of the quoted kit size
  • High levels of Gas and Water tightness
  • Excellent adhesion, applicable to all common building materials
  • Resistant against Water, Alkaline, Chemical agents
  • Resistant to termites (Mastotermes Darwiniensis) Northern Australian termites
  • Resistant to Rats
  • Resistant to Hydrogen Sulphide / Methane and many other Gases (NedLab)
  • Non-corrosive
  • Solvent-free
  • Shock absorbing
  • Non-toxic, neutral and almost odourless
  • Also suitable for limiting the EX-zones during transitions (observe chemical resistance)
  • Complies with 2011 NEC Articles 225.27, 230.8, 300.5(G), 300.7 (A) on Raceway Seals, and 501.15 (B)(2)
  • Suitable for any shaped duct/borehole/opening
  • Quick and easy installation
  • A complete kit
  • Seals all know materials, PVC & PE sheathed cables, PILC, (HD) PE pipes
  • Engineered duct sealing solution
  • Suitable for renovations, can be installed retrospectively
  • Over 25 years of operational experience

Formite hexagonal blocks

  • Material – Mixture of substances (Non Hazardous) – graphite based
  • Resistant to humidity & atmospheric influences
  • Free of organic solvents
  • Zero halogen
  • Colour – Black / gray
  • Properties – Flexible

Small hexagonal block
Dimensions single tube is O/D = 18mm I/D = 11.5mm, Length 60mm

Large hexagonal block
Dimensions single tube is O/D = 27mm I/D = 18.5mm, Length 60mm

For Additional Information on Filoform FiloSeal+HD FIRE Duct Seal (280070, 280080, 280090, 280100, 280110, 280120), please refer to the Technical Data Table below or download PDF File.

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Technical Data

Part Number Product Name Duct Diameter
Min - Max (mm)
Order Unit
280070 FiloSeal+HD FIRE - 75mm > 110mm Ø 110 max. per piece
280080 FiloSeal+HD FIRE - 125mm > 160mm Ø 160 max. per piece
280090 FiloSeal+HD FIRE - 180mm Ø 180 max. per piece
280100 FiloSeal+HD FIRE - 200mm Ø 200 max. per piece
280110 FiloSeal+HD FIRE - 225mm Ø 225 max. per piece
280120 FiloSeal+HD FIRE - 250mm Ø 250 max. per piece


Property Value Standard
Density 1.2 gr/cm³ -
Pressure up to 2 bar -
Pulling Force 100kg (1000 newtons) -
Bend Test 10xd at 45º, with 1 bar pressure -
Flow < 2mm ISO 7390
Colour red-brown  -
Skin over time (23C/55%RH) ± 15 minutes  -
Curing 3 mm / 24 hours  -
Hardness 30 shore A DIN 53505
Elongation 100% DIN 53504
Tensile strength 0.8 N/mm² DIN 53504
Operating temperature +5°C to +40°C  -
Temperature resistance -40°C to +120°C  -

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