FS703 Fire Resistant Silicone Sealant

Product Finder

Talk to our team

FS703 is a low modulus, neutral cure, silicone sealant, suitable for linear gaps sealing in order to reinstate the fire performance in compartment walls & floors.

Fire Rating: 240 Minutes


FS703 is suitable to fire seal joints in compartment walls and floors: Static linear joints (masonry to masonry/rigid wall/rigid floor/flexible wall) Window & door joints (masonry to timber/steel) Movement joints (20%)

Always read SDS, pre-application guidance and relevant application detail prior to application. Ensure the latest documents are downloaded prior to every project commencement.

Do not use around CPVC pipes; for this specific application, please use FS719 HP Blue for CPVC. If used around Pegler X-Press Carbon Steel pipes, the pipe manufacturer should be consulted, and their recommendations followed.

Safety data sheet must be read and understood before use.

  • Up to 4 hours fire resistance - Tested to EN 1366-4.
  • Tested in gaps 10 - 220 mm.
  • Ideal for joints in flexible walls, rigid walls & floors, windows & door frames.
  • Airtight up to 600 Pa.
  • Superior elasticity.
  • Excellent tooling properties.
  • UV & weather resistance.
  • 20% movement tested (together with FJ203 Fire Rope).
FS703 Declaration of Performance (en-GB).pdf Declaration of Performance
MSDS;_A-N-FS703;_(v11-GB-EN).pdf Safety Data Sheets
FS703 Technical Data Sheet (en-GB).pdf Product Data Sheets