The KC 5040/450 compact L-sealer in combination with high performance shrink tunnel (450) is designed for the demands of industrial applications. The quality of this machine series become evident when subjected to hard, continuous use. Products such as for example printed material, sets of glassware, or oil canisters can all be packed quickly and economically whilst maintaining a high quality. The proven impulse sealing technology using Teflon coated sealing and cutting wire provides for an effective and absolutely inodorous mode of operation.