Nullifire M701 Fire Resistant Sealant is a single-part water based fire resistant acrylic sealant for use on all building and construction joints. It can provide up to 5 hours fire protection at building gaps and moveable joints whilst allowing for 20 % movement. It also provides fire protection around service penetrations. M701 Fire Resistant Sealant is used in conjunction with Fire Batt to fire-stop penetrations in compartment walls and floors. This sealant system also provides acoustic and air sealing performances and is available in grey and white.
See data sheet for Nullifire M701Fire Resistant Sealant – PDF