Nullifire FS702 Intumastic Fire Resistant Acrylic Sealant - 600ml Foil (Pack of 12)

Nullifire FS702 is a professional-grade, water-based acrylic sealant formulated to cure into a firm but flexible fire seal. It is specifically designed to provide robust fire resistance in both linear joints and service penetrations. Furthermore, it serves as the approved bonding and pointing mastic for the FB750 Intubatt system.

• Streamline on-site application: With a 30% movement capability and an acoustic rating up to 59 dB, this single sealant reliably handles structural movement, sound dampening, and fire stopping.
• Protect your liability: Built-in Optifire® and Optifire®+ technology means building inspectors can instantly verify the product via UV light or detector, proving your compliance even after a fire.
• Ensure system compatibility: Fully tested and approved for bonding and pointing Nullifire FB750 Intubatts, eliminating the guesswork from mixed-brand installations.

FS702 is rigorously tested to BS EN 1366-3 and BS EN 1366-4, achieving up to 4 hours of fire resistance and holding both CE and UKCA marks. It also acts as an effective cold smoke seal and has been air pressure tested up to 2000 Pa. This makes it a highly dependable choice for strict commercial, healthcare, and industrial applications.

Specifications:

• Size: 600ml Foil
• Fire Resistance: Up to 4 hours (EN 1366-3 & EN 1366-4)
• Movement Capability: Up to 30%
• Acoustic Rating: Up to 59 dB (EN ISO 10140-2)
• Air Permeability: Tested up to 2000 Pa
• Skin Formation Time: ~30 minutes at 23°C / 50% RH
• VOC Content: 6.3 g/L
• Application Temperature: +5°C to +60°C

Depending on the specific penetrating services, Nullifire FI025 Intuflex Insulation Wrap and Nullifire FB750 Intubatt may be required alongside this product to achieve full fire certification.