Fischer Rapid Fire Seal RFS 640

  • Low VOC.
  • Water based.
  • Asbestos and solvent free.
  • Paintable.
  • Freeze – thaw capabilities.

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Fischer Rapid Fire Seal RFS 640 is a flexible firestop sealant designed for smoke sealing, water resistance, and dynamic movement applications.

Fischer Rapid Fire Seal RFS 640 is a water-based firestop sealant developed for commercial, industrial, and infrastructure fire protection applications.

Advantages of Fischer Rapid Fire Seal RFS 640
Water-based formulation
Flexible set for movement applications
Contains mould growth inhibitor
Freeze-thaw capability
Paintable finish
Accelerated age and humidity tested
Low VOC formulation
Suitable for spray or brush application
Excellent smoke sealing performance
Water-resistant properties
Asbestos-free and solvent-free composition

Fischer Rapid Fire Seal RFS 640 is suitable for internal firestop applications and environments where dynamic movement may occur while maintaining reliable sealing performance.

Its advanced formulation supports dependable smoke protection, water resistance, and long-term durability in demanding construction and fire safety systems.

fischer rapid fire resistant sealant RFS 640 is a spray grade one part water based, fire rated sealant which has been design to provide smoke and fire protection on construction joints and service penetrations in both vertical and horizontal applications. Tested in accordance with ASTM E 814 (UL1479), ASTM E 1966 (UL 2079), ASTM E 2307, ASTM E 84 (UL723) the fischer RFS can provide up to 3 hours fire rating.

Contents 19 l
Colour red
Shelf life 36 months

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