Nullifire M701 Intumescent Acrylic Sealant

Nullifire M701 is a single-part water based fire resistant acrylic sealant. M701 provides up to 5 hours fire protection at building gaps and movement joints, whilst allowing up to 20% movement. It also provides fire protection around service penetrations. In addition, this product can ensure that the acoustic performance of the substrate is maintained. M701 has been fully tested to comply with the air leakage requirement of ‘Approved Document L’.

The sealant is suitable for internal use in a variety of fire rated structures. Typical applications include joints in compartment walls and floors, providing a perimeter seal around partitioning and service penetrations, and bedding of fire door locks and hinges.

uk  Made in the U.K.


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SKU: nullifire-m701-intumescent-acrylic-sealant Categories: ,

Product Description

Why use Nullifire Intumescent Acrylic Sealant M701?

  • Up to 5 hours fire resistance
  • Suitable for gaps up to 50mm wide
  • No insulative backing material required for fire performance, PE backing rod for depth gauge only
  • Maintains substrate acoustic rating
  • Reduces air leakage
  • Excellent tool ability and low slump characteristics, can be smoothed
  • Width to depth ratio of 2:1
  • Accommodates movement of up to 20%
  • Over paintable with most water based and oil based top seals
  • Low shrinkage
  • Resistant to mould fungus and vermin attack

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