Geocel Firex 321 One Part Fire Rated & Acoustic Acrylic Sealant

Geocel & DOWSIL™ Technologies for fire-rated applications

For internal perimeter pointing of fire rated door and window frames where the integrity of fire walls or partitions needs to be maintained.

Product info


  • Swells at high temperature to give a fire and smoke resistant seal 4 hour fire rating
  • Environmentally friendly
  • Overpaintable
  • Good unprimed adhesion to most common construction substrates
  • Conforms to BS476 Part 20 : 1987 (ISO 834)



Technical Information

Where to use Interior/Exterior
Paintable Yes
Time to cure 24 hours
Time to cure disclaimer Sealant cure rate is 2mm per 24 hours
Container Type Cartridge
Sizes 380ml ‘e’ Cartridges
Application method Sealant Gun and Cartridge


Application Instructions

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Quantity Estimator

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