1 - 50ml foam sealant cartridge with resealing cap2 - static mixing nozzles2 - pair disposable gloves5 - 2” (5 cm) Zip-Disc™ ZipSeal™ Duct Sealant is a practical and efficient way to seal small conduits and communication innerducts. The revolutionary Zip-Disc™ insert traps and keeps the foaming liquid in its open-cell (center) area.