AFT™ closed cell sealant provides 10 ft of water blocking performance in electrical and telecommunication environments. The 2-part, closed cell AFT™ Sealant is durable and easy to install. AFT™ has excellent adhesion to a variety of conduits. AFT™ seals conduit with quicker installation and higher performance compared to duct putty or single-part insulating hardware store foams. The 2-part aerosol foam seals any size void and cures without exposure to air. AFT™ can be used to seal service entrances, conduit stub ups, inner ducts, inverters and combiners for solar installations and riser poles for the electrical grid. The AFT™ package is reusable and the fire retardant seal is self-extinguishing. AFT™ is UL recognized and passed UL94 with a Class HBF fire retardant rating.