a user friendly dispensing device for viscous materials has an applicator nozzle designed to dispense a bead of material from a squeeze - tube into cracks and corners by being dragged along a surface rather than being pushed . the device has a unique ergonomic shape allowing for ease of application and extrusion of viscous materials such as sealants and caulks squeezed out of the tube . the applicator nozzle is made of plastic ; while plastic , a plastic laminate , or metal , is used to make the squeeze - tube .