Nullifire FS703 Neutral Cure, Fire Rated Silicone

Nullifire FS703 Neutral Cure, Fire Rated Silicone


FS703 Silicone Sealant is a single-part alkoxy-based fire resistant, elastomeric, neutral cure silicone sealant. Provides up to 4 hours fire protection at internal and external building gaps and movement joints. FS703 is designed for sealing joints in compartment walls and floors, Gaps between frames and structures, at junctions of different materials.

Make an enquiry

    What the experts have to say

    Nullifire FS703
    Clean all surfaces of loose particles, moisture, oils, grease and corrosive materials. Abrade painted or shiny surfaces. Check specification is suitable for movement, fire rating and gap size.
    • Can achieve up to 4 hours joint fire resistance

    • Suitable for gaps up to 50 mm wide

    • Certified 3rd party accreditation

    • Seal ratio at 2:1

    • Neutral cure silicone sealant

    • Air Permeability 600Pa EN1026

    • Assumed working life of 10 years (ETAG 026)

    • CE Marked ETAG 026 and Classification 13501:2

    Fire Protection:
    Up to 4 hours
    Air Permeability:
    Air tight up to 600 Pa
    Depth of Sealant Required:
    50% of Width
    Assumed Working Life:
    10 Years
    Cure Through Time:
    1-2mm/day at 23°C, 50% RH
    Tensile Strength:
    Service Temperature Range:
    -40℃ to +150℃
    Full Information:
    Check out the full datasheet available in the Downloads section!

    Related Products