Air-powered caulk guns apply sealants and one-part adhesives that bond materials and fill gaps or joints between surfaces. They hold either single cartridges, sausage packs, or bulk forms of caulk or adhesive and dispense a smooth, continuous bead to minimize waste and form consistent seals. Caulking guns are commonly used to seal around tubs, sinks, windows, doors, baseboards, and vents. These pneumatic guns dispense caulk with greater control and less effort than manual guns. They run on compressed air and contain few moving parts, so they typically run cool, have a long lifespan, and weigh less than cordless guns.