Abesco FP200 FR Expanding Foam is a single pack Fire Rated polyurethane expanding foam, and is designed to prevent the spread of fire and smoke from one compartment to another through gaps and voids through fire rated walls or floors. Made to fill gaps, small openings, and crevices in and around fire rated walls and floors, the Abesco® FP200 uses polyurethane expanding foam which prohibits fire and smoke from spreading. Aside from great fire protection, the Abesco fire rated foam offers an impressive insulation seal when working with wood, brick, aluminum, concrete, and steel.