Nullifire FS709 Intumescent Sealant

Availability: In Stock

£104.13 inc. VAT: £124.96

Nullifire FS709 Intumescent Fire Sealant (Box of 12)

The Nullifire FS709 is a high-performance, intumescent fire sealant engineered to provide unbeatable fire protection in construction joints and gaps. With up to 4 hours of fire resistance, FS709 expands under heat, effectively sealing off spaces to prevent the spread of smoke, fire, and toxic gases. Ideal for both interior and exterior applications, FS709 offers exceptional durability, flexibility, and adhesion, making it perfect for various substrates, including concrete, masonry, and steel.

This versatile sealant is easy to apply, non-toxic, and fully compliant with international fire safety standards. Choose FS709 for reliable, lasting fire protection that doesn’t compromise on quality or ease of installation. Perfect for use in commercial, industrial, and residential projects, FS709 is a premium choice for those who prioritize safety and performance.

Key Features:

  • Up to 4 hours of fire resistance
  • Expands under heat for superior fire-stopping capabilities
  • Highly durable and flexible for long-lasting application
  • Suitable for use on multiple substrates
  • Fully compliant with international fire safety standards
  • Ideal for commercial, industrial, and residential settings

FS709 HP is a high expansion/pressure exerting, graphite intumescent sealant that expands when exposed to fire, reinstating the fire performance of compartment walls and floors which have been penetrated with services.
FS709 can be used on flexible walls & rigid walls (100 mm or wider), rigid floors (150 mm or wider), and also with FB750 Intubatt Coated Batts.

Usage/purpose

FS709 is designed to close off gaps and penetrations in compartment walls and floors, to provide up to 4 hours fire resistance. This product has been formulated to close off combustible pipe penetrations in the event of a fire, negating the need for pipe closers or wrap systems. FS709 has been tested with the following service penetrations: combustible pipes up to 125 mm (ABS, PE, PP, HDPE, PVC, PEX…) insulated non-combustible pipes up to 160 mm ; pipe insulation types: nytrile rubber, glass fibre, rock fibre up to 60 mm insulation wall thickness individual or groups of cables, perforated & non-perforated cable trays, cable ladders, cable baskets (up to 500 mm), cable bundles (up to 100 mm) For use in dry internal conditions only. For other conditions, such as high humidity, contact Technical Services.

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

Safety data sheet must be read and understood before use.

Product Benefits 

  • Up to 4 hours fire resistance – Tested to EN 1366-3 and EN 1366-4.
  • Versatile & easy to apply.
  • Can be used with FB750 Intubatt Coated Batt.
  • Tested with combustible pipes up to 125 mm, insulated non-combustible pipes up to 160 mm, cables, cable trays/ladders/baskets (up to 500 mm), cable bundles (up to 100 mm).
  • Tested in openings up to 600 x 600 mm.
  • Tested for use in linear gaps up to 25 mm.
  • Optifire®+ unique traceability identifier.