Ryanfire Mastic

Ryanfire Mastic is an internal use water-borne acrylic sealant with fire and smoke resistant properties. Ryanfire Mastic is used for sealing apertures around service penetrations.
Ryanfire Mastic cures to form a firm and flexible seal preventing the spread of flame and smoke through joints and openings in Ryanbatt 502/802 boards and in fire rated walls & floors.
Ryanfire Mastic is available in a gun grade or a brush grade.