Sealer operation is extremely simple as the operator needs only to feed bags into the machine. The filled bags rest on a motorized conveyor belt while the top of the bag is carefully guided through the seal process by Teflon Bands. Band Sealers are designed to seal any thermoplastic material, including Polyethylene, Polypropylene, and laminations containing foils, such as those used to package coffee, or those that reduce electrostatic charge used to package electronic components.

Most sealers are available with hot roll or hot stamping printing coders, and a choice of powder coated metal alloys or stainless steel construction.