HVAC leak sealer and gasket are used to seal the joints between the different parts of the ventilation system, such as between the ducts and the air handler. They help to ensure that the system is operating at maximum efficiency by preventing the loss of conditioned air and by keeping contaminants out. AC Gasket can help to improve the indoor air quality and reduce the load on the sys... https://www.partshnc.com/ventilation-parts/ac-leak-sealer