Seal between elements of a fuel-injection nozzle for an internal combustion engine

A fuel injection nozzle for an internal combustion engine, said nozzle comprising:

• a nozzle body having a valve needle with a stop displaceably disposed therein,
• a nozzle holder having a pressure pin displaceably disposed therein, and
• a disk-shaped stop element provided in a region between the nozzle body and the nozzle holder, said stop element having a fuel inlet bore therein, wherein
• the nozzle body and the nozzle holder are axially tensioned against one another such that the stop element forms a first sealing surface bearing on a nozzle holder section, and a second sealing surface bearing on a nozzle body section, wherein the first and the second sealing surfaces each incorporate at least one cutout for increasing the contact pressure of the sealing surfaces, and the cutouts being implemented evenly opposite one another in the sealing surfaces and separated from said fuel inlet bore.

A method for manufacturing a fuel injection nozzle for an internal combustion engine, said method comprising:

• displaceably disposing a valve needle with a stop within a nozzle body,
• displaceably disposing a pressure pin within a nozzle holder,
• providing a disk-shaped stop element in a region between the nozzle body and the nozzle holder, said stop element having a fuel inlet bore therein,
• axially tensioning the nozzle body and the nozzle holder against one another such that the stop element forms a first sealing surface bearing on a nozzle holder section, and a second sealing surface bearing on a nozzle body section, and
• producing at least one cutout in the two sealing surfaces in a single manufacturing operation, wherein said at least one cutout is separated from said fuel inlet bore.