Durotech Duroseal Durofire A is a single-component, non-sag, fire-rated acrylic-based gunnable sealant. It is a general-purpose product designed for construction joints and sealing service penetrations in plasterboard, concrete floors, and masonry wall constructions. Durotech Duroseal Durofire A is a gun-grade acrylic-based sealing compound specifically manufactured for sealing low-movement interior joints (up to ±25%) in masonry and plasterboard, providing a fire barrier for up to 4 hours. Read More