Polyurethane foam sealants adhere to wood, metal, masonry and concrete. Because they expand as they are applied, they fill in and seal gaps and joints around windows, doors, pipes and ductwork for the purpose of insulation and prevention of air infiltration, thus saving you time and money. Some formulas require a dispensing tool, while some are applied with a plastic tube that is shipped with the product. AFT is proud to offer foam sealants manufactured by Power Fasteners. Should you have any questions, please let our knowledgeable sales staff know. We're here to help.