3M Restricting Collar 4 3/4″ x 25′

A flexible firestop for metal pipe, cable penetrations and top-of-wall applications, 3M™ Fire Barrier Sealant FD 150+ cures upon exposure to the atmosphere to form a monolithic seal. When properly installed, this sealant helps control the spread of fire, smoke and noxious gasses before, during and after exposure to a fire and exhibits excellent adhesion to a full range of construction substrates.