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Bostik FP403 Fireseal Hybrid Sealant 290ml x 12

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Bostik FP403 Fireseal Hybrid is a fire retardant, elastic and paintable hybrid sealant. Bostik Bostik FP403 Fireseal Hybrid is fire resistant for up to 4 hours in linear (movement) joints. Absorbs up to 25% of movement.


  • Tested according to EN 1366-4
  • Up to 4 hours of fire resistance
  • Also suitable for wall/ceiling and wall/floor connections
  • Suitable for joints up to 30 mm wide
  • Certified for steel/wooden frames
  • Certified for all metal-stud connections
  • Excellent processing and easy toolability
  • Joint movement up to 25%
  • Paintable with most water based and synthetic paints
  • Non corrosive towards metals
  • Resistant to UV, water and weather


Bostik FP403 Fireseal Hybrid was specifically developed for fire resistant sealing of connection and expansion joints in construction, which in case of fire, should have a certain fire resistance and prevents spreading of fire, smoke and toxic gases. Also certified for horizontal joints, connection floor/ceiling with wall, wooden and steel. frames, stony substrates and all metal-stud applications. Fire resistance tested according to EN 1366-4 for up to 240 minutes in a joint of 30 mm wide.


Bostik FP403 Fireseal Hybrid Sealant TDS

Bostik FP403 Fireseal Hybrid Sealant MSDS

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