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Duct Seal FR Cable Duct Sealing System (fire resistant) - ≤2 Bar Pressure Resistance

Original price £67.90 - Original price £339.46
Original price
£67.90 - £339.46
Current price £67.90

Duct Seal FR is an innovative, fire-resistant, low-smoke, zero-halogen duct sealing system designed for exceptional flexibility. It effectively seals all cable sizes, including large, heavy cables and pipes within ducted networks. This system is engineered to prevent the ingress of harmful or flammable gases, liquids, fire, smoke, and pests, and it has been rigorously tested according to BS EN1366:3 2021.

Duct Seal FR features our patented, pending design comprising Intumescent circular-shaped tubes manufactured from our FireStuff marine-grade granulate. These tubes can be seamlessly connected, torn apart, and reconfigured into a cross-shaped structure to accommodate trefoil cables. This unique backing support system provides robust structural integrity and minimises cable movement during the application of our flexible intumescent adhesive and sealing compounds, GreyStuff or RedStuff. All components are designed and manufactured in the UK, ensuring high quality and reliability.

Duct Seal FR, along with GreyStuff or RedStuff, is a non-hazardous, superior single component, neutral curing sealant that has been specifically developed to cope with the harsh environments around duct openings to ensure ducted networks and penetrations are protected.

Key Features:

  • Fire Resistant, tested to BSEN1366:3 2021
  • Intumescent technology, both for the sealant & sleeves
  • One-of-a-kind patented trefoil/triplex cable separation - The best in the market
  • Low Smoke, Zero Halogen
  • MEKO-free, Fybrid, Non-Hazardous Intumescent sealant 
  • Fire, Water & Gas Tight
  • Resists Toxic Gases - Ideal for the Water Industry (methane,  chlorine, & hydrogen sulfide)
  • Resists Hydrocarbons - Perfect for the Petrol Forecourt industry
  • Microbial Defence - boosted to resist fungi & bacteria
  • MADE IN UK - All components are designed and manufactured locally

Fire Resistance 

  • Up to 4 hours (240 mins) Fire Resistance (in both directions)
  • BS EN 1366-3:2021 which supersedes BS EN 1366-3:2009
  • Cables tested: Small, Medium, Large, Telecommunication & Bundles 
  • Cables types: NYY-O, N2XH-J, HO7V-K, J-Y(ST) Y 
  • Warrington Fire cable Ref: (B), (G), (D3), (F) & (E)
  • Tested in horizontal penetrations up to 200mm (8 inches) in diameter 
  • Tested in 140mm thick low-density concrete walls (no duct or sleeve)
  • Tested at Warrington Fire (Exova)

Areas of Application:

  • Data Centres 
  • Sub Stations
  • Pumping Stations
  • Waste to Energy Plants
  • Wind Farms / Turbines
  • Electrical Utilities
  • Rail 
  • All Construction sectors 
  • Anywhere requiring Fire Resistance through cable penetrations

To view the manufacturers' webpage - AC Cable Solutions, please CLICK HERE

Product No. Product Duct Opening Max Unit Sold
Using 1 x DuctSeal FR Kit – up to 100mm
DSFR100 Duct Seal FR 100mm x1 Kit
Using 2 x DuctSeal FR Kits – up to 150mm
DSFR150 Duct Seal FR 150mm x2 Kits
Using 3 x DuctSeal FR Kits – up to 200mm
DSFR200 Duct Seal FR 200mm x3 Kits
Using 4 x DuctSeal FR Kits – up to 225mm
DSFR225 Duct Seal FR 225mm x4 Kits
Using 5 x DuctSeal FR Kits – up to 250mm
DSFR250 Duct Seal FR 250mm x5 Kits
Key Features
  • One-of-a-kind patented trefoil/triplex cable separation - The best in the market
  • MEKO-free, Fybrid, Non-Hazardous Intumescent sealant 
  • Water & Gas Tight
  • Fire Resistant
  • Resists Toxic Gases - Ideal for the Water Industry (methane,  chlorine, & hydrogen sulfide)
  • Resists Hydrocarbons - Perfect for the Petrol Forecourt industry
  • Microbial Defence - boosted to resist fungi & bacteria
  • MADE IN UK - All components are designed and manufactured locally

One Kit per Box
All components included to seal 1 x duct as per the kit size mentioned (Caulking gun not
included, but can be sold separately).
** One kit may fill more than one duct, depending on cable % fill.**
Call +44 (0)161 874 1480 for advice.

Cable Separation
It’s imperative to ensure separation between each cable and from the inside of the duct.
Our unique daisy-chained circular tubes easily separates and supports single or multiple cables. Using our patent pending tubular rubber tubes, various shapes can be made to help with cable separation, for example, trefoil/triplex cables

Running Water
The duct & cables can be damp but with no running water. All dirt, oil or grease must be
cleaned before applying GreyStuff or RedStuff.

Cure Time
GreyStuff and RedStuff will cure 3-4mm daily, depending on the Humidity and temperature. The higher the humidity % and temperature, the quicker our sealants will cure. A minimum requirement of 25mm is required for an effective seal.

Uncured material spillages can be cleaned with a solvent-based wipe.

Fire Certification
Important Note: A fire rating is applicable only to an "as fire tested" system or an otherwise approved configuration. The entire system or configuration achieves the described fire rating only when a specific proprietary brand of product is installed in an identical manner to the approved tested configuration. Always ensure that your installation matches our fire test certification. It is the end user's responsibility to verify that Duct Seal FR is the correct system for the project requirements. Please contact our technical department to request a copy of our test report, and refer to our Duct Sealing Disclaimer.

GreyStuff or RedStuff Fire Resistance
GreyStuff sealant was tested according to BSEN1366-3:2023. RedStuff has not been tested, but can be used with your authorisation only (customer and/or end user). We can confirm that the difference between GreyStuff and RedStuff is less than <1%. The only change in the formulation from GreyStuff to RedStuff is the pigment component. This alteration does not affect the fire resistance, physical properties, or manual handling of the final product.

Health & Safety
GreyStuff & RedStuff are based on a neutral curing system that is hazardous-free to protect users when carrying out tasks like sealing cable ducts. Non-hazardous Zero MEKO.

Re-entry & Removal
GreyStuff & RedStuff will cure to a similar hardness of a rubber eraser, so re-entry and
removal are achievable. The ease of this depends on the type of tools used. For example,
a sharper tool will be easier than a blunt-ended tool. Only use sharp tools when cables
are de-energised. AC Cable Solutions accepts no responsibility for damaged cables.

Cable Suitability
GreyStuff and RedStuff are a single-component neutral curing system containing no solvents. Our formulation does not damage the properties of a cable sheath, or stain surfaces.

Both GreyStuff & RedStuff should be kept in a cool, dry environment and away from
sunlight. Product shelf life is 12 months. Once opened, any remaining product can still be used for 1 month afterwards, provided the screwcap is securely fitted.

Features & Standards
Water & Gas tight to 2.0 bar Feature Measurement
Non-slumping Density 1.27
High bonding strength Colour Anthracite Grey
or Brick Red
Odourless when curing Skin Over Time 10 mins
Flexible Curing 3-4mm per day
Intumescent Tack free time 22 mins
Very strong porous sticky char is formed when exposed to fire, which has excellent thermal insulation properties. Hardness 35 to 38 Shore A
Microbial resistance – coverage against Fungi, E-Coli, Escherichia coli, Staphylococcus aureus, & A. brasiliensis Elongation 250%
UV & Ozone resistant Flow
3.33 million cPs at 380°C
Non-hazardous Tensile strength
0.72 N/mm^2
Zero halogens used Operating Temperature +5 to 40°C
Emits 0% MEKO Temperature Resistance -35 to +120°C
Resistant to Hydrocarbons (Petrol, Diesel, ASTM oil, & LPG Gas) Intumescence Activation Temperature 210°C
Resistant to Methane, Hydrogen Sulphide, & Chlorine gas – Independently tested. Pressure Resistance 2.0 Bar
Resistant to many other gases & liquids, for example, ADBLUE, & Antifreeze. Shelf Life 12 months
Complies with DSEAR duct sealing regulations
WIMES compliant, as described in the WIMES Specification in section, 3.02 2019 clause
Complies with 2011 NEC Articles 225.27, 230.8, 300.5(G), 300.7 (A) on Raceway Seals, and 501.15 (B)(2)
Petrol station forecourt accepted, as per the technology described in the APEA Blue
ATEX Compliant – Contains no moving parts or any form of material that can create a spark
Age tested to 50 years – Independently tested