FireFlex MS

Solvent based adhesive


Simseal FireFlex MS is a one-part MS sealant that is cured to an elastic form on exposure to atmospheric moisture at room temperature. It is a printable product that exhibits excellent performance in a fire zone.


600 ML

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Key performance Properties

  • Fire resistance according to AS 1530.4
  • Fire resistance according to EN 1366-4
  • Fire resistance up to 240 minutes.
  • Outstanding resistance to ozone, UV and temperature extremes.
  • Excellent adhesion to many common building substrates.
  • Fast cure [tack free in 2 hours].
  • Joint movement accommodation +/-25%.
  • Fire-Sheild Fire-Rated Silicone Sealant is fire-rated – it is not intumescent.
  • Very good resistance to weathering
  • Easy to smooth and very good workability
  • Good adhesion to many different substrates
  • Neutral curing


Sealing linear gap joint seals. Sealing around metallic pipe penetrations. Sealing around plastic pipe or cable penetrations if they have been protected.

Typical data values should not be used as specifications. Please contact Simseal for further information.

600 ML

Additional information

Weight 0.750 kg
Dimensions 20 × 20 × 15 cm


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