Trailing piston having a support lip

A sealing and dispensing piston for insertion into an interior of a cartridge, the piston comprising:

• a piston plate configured to contact a filling substance disposed in the interior of the cartridge;
• a skirt section adjoining a rear of the piston plate;
• and
• a front lamella extending forward from the skirt section to form a space between the front lamella and a front portion of the skirt section, wherein the front lamella has a sealing surface configured to abut against an inner surface of a wall of the cartridge;
• wherein the sealing surface is configured to form a seal between the inside of the wall of the cartridge and the piston, such that the sealing surface elastically abuts the inside of the wall to prevent the filling substance from passing through the area between the front lamella and the inside of the wall,
• wherein the front lamella is at least one of elastically designed and mounted in such a way that the piston automatically moves backwards or forwards along the wall of the cartridge when an overpressure or underpressure is generated due to expansion, shrinkage, or movement of the filling substance.