Nullifire FS702 Intumastic Product Image

What is Nullifire FS702 Intumastic Fire Resistant Acrylic Sealant?

Nullifire FS702 Intumastic is a water-based acrylic sealant which cures to give a firm but flexible fire seal. Suitable for use in various construction joints offering up to 30% movement capability whilst providing an excellent acoustic and air seal. FS702 sealant is suited for use around non-combustible services, cables, rock fibre insulated non-combustible pipes, using a minimum depth of 25 mm. The product has excellent adhesive qualities and can also be used for the bonding and pointing of joints and service penetrations in conjunction with FB750 Intubatt system.

What applications can FS702 Intumastic be used for?

FS702 is suitable for a variety of applications:

  • Static & movement linear joints (masonry/flexible wall to masonry/rigid wall/rigid floor/flexible wall)
  • Window & door joints (masonry to timber/steel)
  • FB750 to flexible wall/rigid wall/rigidfloor
  • Cold smoke seal Service penetrations sealing: copper & steel pipes, cable bundles / trays / ladders (with and without FI025 Intuflex Insulation Wrap)
  • FS702 is also suitable for service movement joints (consult 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.

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.

Benefits of using FI025 Intuflex

Nullifire FS702 Intumastic Product Image

  • Up to 4 hours fire resistance – Tested to EN 1366-4, EN 1366-3 and BS 476 Pt 20-22.
  • Up to 30% movement capability (during fire test).
  • Suitable for flexible walls and rigid walls & floors.
  • Used for sealing FB750 Intubatt.
  • Acoustics up to 55 dB.
  • Air seal up to 2,000 Pa.
  • Optifire® and Optifire®+ unique traceability identifiers.

For product and technical advice, contact our knowledgable and friendly team here.




Nullifire FS702 Intumastic Technical Data Sheet [PDF]

Download Nullifire FS702 Intumastic Technical Data Sheet here.


Nullifire FS702 IntumasticMaterial Safety Data Sheet [PDF]

Download Nullifire FS702 Intumastic Material Safety Data Sheet here.


Nullifire FS702 Intumastic DoP [PDF]

Download Nullifire FS702 Intumastic Declaration of Performance here.