Apparatus for sealing the top of a package for a food product and system for forming and filling a food package

An apparatus for sealing the top of a package for a food product, the apparatus comprising:

• a pair of oppositely disposed first and second sealing jaws configured for reversibly engaging each other over the top of the package;
• at least one wedge on the first sealing jaw configured for contacting a first top portion of the package to form a first gable panel;
• a key on the second sealing jaw configured for contacting a second top portion of the package to form a second gable panel;
• at least one lug on the key configured for reducing skewing of the package prior to sealing, the at least one lug having a length extending away from the key greater than a width of the at least one lug along the key, wherein the at least one lug contacts the package only when the package has an irregular conformation;
• and
• a rubber dolly on either the first or the second sealing jaw, the rubber dolly and the sealing jaw opposing the rubber dolly being configured to form and seal a fin between the rubber dolly and the opposing sealing jaw thereby sealing the top of the package.