Both models P403 and P404, are light-weight devices, suitable for strapping and sealing flat packaged goods (e.g. pallets, bales, crates and packages of all kinds) with plastic strap. They are characterised by reliability, strength, and maintenance-friendliness and can also be used outdoors as portable device. High strap tensions are possible thanks to the tensioning drum. A high joint strength is also guaranteed with spezial seals and the patented sealing mechanism. With the separate sealing lever the straps are joined in a flash with a single stroke.