Nullifire M703 Silicone Sealant

Nullifire M703 is a single-part alkoxy-based fire resistant, elastomeric, neutral cure silicone sealant. M703 provides up to 5 hours fire protection at internal and external building gaps and movement joints. It allows up to 50% movement. It also provides fire protection around service penetrations. In addition, this product can ensure that the acoustic performance of the substrate is maintained. M703 has been fully tested to comply with the air leakage requirement of ‘Approved Document L’.

  Made in the U.K.

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