A connector module for fluidly connecting a fluid system to a function module, comprising a housing with at least one fluid port and at least one connector fluidly connected to the fluid port, the connector comprising an adaptor, a union nut, a union nut interface, a metal gasket and at least one O-ring, wherein the metal gasket is deformed by the union nut pressing it via the adaptor against the union nut interface and the metal gasket fluidly seals the adaptor to the union nut interface, wherein the adaptor and the union nut interface comprise a protrusion and a recess for pressing against the metal gasket.