A seal arrangement for a plug-in connector for establishing electrical connections via a housing, in particular a device for driving a compressor. The seal arrangement exhibits a mounting element to accommodate plug-in connectors for transmitting electrical energy and data, and a sealing element located between the housing and the mounting element. The mounting element is designed with a flange with a sealing surface facing in the direction of the housing. The sealing surface of the flange thus exhibits a first contour and the housing exhibits a second contour in the area of the location of the sealing surface surrounding a pass-through opening.