PROMASEAL®-AG Acrylic Intumescent Sealant is supplied in 300ml cartridges and is available in grey. It expands when heat is applied to it filling the penetration and taking up the space of any service or insulation that melts leaving an opening. It can be painted after 24 hours of installation , skin formation occurs within 15 mins on a typical 20oC day. Humidity of greater than 65% will result in extended drying time. Substrate must be free of oil, grease and dust before installation. Clean tools with water after use.