A sealing die assembly for a form fill packaging machine is disclosed. The sealing die assembly may have a forming station, a loading station, a sealing station, and a cutting station. The sealing station may contain a sealing die box and a sealing die head that come together to secure pieces of packing material around a product. To minimize the amount of scrap that the sealing die assembly produces, the die box may have one or more protrusions that extend in a longitudinal direction and provide surface area. The one or more protrusions may be configured so as not to interfere with the longitudinal spacing of one or more cavities that may be formed in the packing material.