High-pressure connective device, high-pressure fuel pump, and method for producing a high-pressure connection device for a high-pressure fuel pump

A high-pressure fuel pump for charging a fuel with high pressure, comprising:

• a high-pressure connection device for connecting the high-pressure fuel pump to one or more elements of a fuel injection system, the high-pressure connection device including:
• an outlet, which discharges fuel from the high-pressure fuel pump;
• a connector connecting the outlet to the one or more elements of the fuel injection system;
• a weld seam which connects the outlet and the connector;
• and
• a pretensioner configured to exert a tension force on the weld seam, the pretensioner directly contacting the connector and directing connected to the outlet.

A method for providing a high-pressure connection for a high-pressure fuel pump, the method comprising:

• providing an outlet for discharging a fuel from the high-pressure fuel pump;
• providing a connector configured to connect the outlet to at least one element of a fuel injection system;
• generating a weld seam that connects the outlet to the connector;
• and
• exerting a pretensioning force on the weld seam in a direction of the outlet, comprising directly connecting a pretensioner to the outlet such that a pretension face of the pretensioner contacts a contact face of the connector and applies the pretensioning force to the weld seam.