Nullifire FS703 Fire Resistant Silicone Sealant
Passive Fire Protection

Nullifire FS703 Fire Resistant Silicone Sealant

FS703 is a single-component, alkoxy-based, fire rated elastomeric, neutral-cure silicone sealant. FS703 provides up to 240 minutes fire protection at internal and external building gaps and movement joints. It is suitable for joints in compartment walls and floors, gaps between frames and structures and at junctions of different materials.

Packaging: 310ml cartridges/600ml sausages
Colour: White & grey

FS703 is suitable for the following substrates:

  • Masonry to masonry
  • Masonry to timber
  • Masonry to steel

Please see data sheet for more information. Please do not hesitate to contact us for further information, pricing or to discuss your fire protection requirements.

  • Up to 4 hours joint fire resistance tested in accordance with EN 1366-4
  • CE Marked ETAG 026 and Classification 13501:2
  • Assumed working life of 10 years (ETAG 026)
  • Suitable for gaps up to 50mm wide
  • Certified 3rd party accreditation
  • Air Permeability 600Pa EN1026
  • Seal ratio at 2:1
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