SEALit Fire Rated Sealant

Intumescent acrylic sealant that helps prevent the spread of fire and smoke for up to 4 hours in fire rated walls and floors.

General Details

This acrylic fire rated sealant is specially designed to prevent the spread of fire and smoke. It’s suitable for use on joints and openings located in fire rated walls and floors and creates a durable joint with reasonable levels of elasticity.


Certified Intumescent Sealant

When subjected to standard atmospheric conditions this sealant will cure normally, retain elasticity for joint movement and perform as expected. However, once under exposure to fire, it creates a robust fire safety seal that helps prevent the spread.

At approximately 180°C thermal activation begins. At which point the material expands (intumesce) to prevent the passage of fire and smoke for periods of up to and beyond 4 hours.

Additionally, this product will also maintain acoustic design performance within the environments where it is used.

Key Features
  • Up to 4 hours fire and smoke resistance.
  • 12.5% flexibility.
  • Maintains acoustic design.
  • Tested to EN 1366-4.
  • Can be painted.
  • Low emissions.




New ECO-PACs are aluminium foil sausages that replace traditional single use plastic cartridges. These strong durable packs are easy to use with no mess and contain less than 1% plastic. They’re much better for the environment because they generate 96% less waste volume.

As well as the environmental benefits, you also benefit financially. Because 400ml ECO-PACs are priced to be better value for money than their smaller plastic cartridge equivalent.

Technical Info
Testing Standard Result
Curing System Through moisture in the air
Components 1
Skin Formation At 23ᴼC & 50% RH 25 mins
Specific Gravity 1.56 – 1.60
Flash Point None
Reaction to Fire Class B-s1, d0
Air Permeability EN 1026: 2016 Air, smoke and gas tight tested
Expansion in Fire 1: 2-3
BWR 3 Use category IA1, S/W3
Thermal Conduct 0.845 W/mK (+/- 3%) @ 20mm depth
Application Temp +5ᴼC to +30ᴼC
Service Temp -20ᴼC to +70ᴼC
Paint Compatibility Can be painted


Product Variations
Product Code Size Colour Barcode
H18526 290ml Cartridge White 5060084185265
H18527 400ml ECO-PAC White 5060084185272