A filter cartridge for being removably inserted into a filter housing with a housing socket and a housing cover , wherein the filter cartridge comprises at least - a filter element forming a fluid channel with a longitudinal axis , a front end and a rear end; - a connector element being attached to the front end, wherein the connector element has at least: ∘ a forward-facing side facing away from the front end into a forward direction being parallel to the longitudinal axis , and ∘ a peripheral surface with at least one protruding segment , ∘ a first fluid port in the forward-facing side , being in fluid communication with a first fluid opening in a radially outward facing surface of the filter cartridge , ∘ a second fluid port being in fluid communication with the fluid channel ; - a gasket being supported on a first and/or second ring surface of the peripheral surface ; characterized in, that (i) the gasket is movably supported on the first and/or second ring surface ; (ii) at least one wedge element with a first wedge surface , and a second wedge surface is movably located on the peripheral surface , wherein the first wedge surface faces towards the protruding segment and the second wedge surface faces away from the peripheral surface ; (iii) the wedge element has a back side connecting the first wedge surface and the second wedge surface ; (iv) the at least one wedge element is movably supported to be moved in a first direction from a first position into a second position by exerting a force parallel to the longitudinal axis to the back side ; and in that a) the at least one wedge element , at least if in its first position, is positioned in between of the gasket and the protruding segment , or b) the protruding segment is in between of the gasket and the wedge element . - a filter element forming a fluid channel with a longitudinal axis , a front end and a rear end; - a connector element being attached to the front end, wherein the connector element has at least: ∘ a forward-facing side facing away from the front end into a forward direction being parallel to the longitudinal axis , and ∘ a peripheral surface with at least one protruding segment , ∘ a first fluid port in the forward-facing side , being in fluid communication with a first fluid opening in a radially outward facing surface of the filter cartridge , ∘ a second fluid port being in fluid communication with the fluid channel ; ∘ a forward-facing side facing away from the front end into a forward direction being parallel to the longitudinal axis , and ∘ a peripheral surface with at least one protruding segment , ∘ a first fluid port in the forward-facing side , being in fluid communication with a first fluid opening in a radially outward facing surface of the filter cartridge , ∘ a second fluid port being in fluid communication with the fluid channel ; - a gasket being supported on a first and/or second ring surface of the peripheral surface ; (i) the gasket is movably supported on the first and/or second ring surface ; (ii) at least one wedge element with a first wedge surface , and a second wedge surface is movably located on the peripheral surface , wherein the first wedge surface faces towards the protruding segment and the second wedge surface faces away from the peripheral surface ; (iii) the wedge element has a back side connecting the first wedge surface and the second wedge surface ; (iv) the at least one wedge element is movably supported to be moved in a first direction from a first position into a second position by exerting a force parallel to the longitudinal axis to the back side ; a) the at least one wedge element , at least if in its first position, is positioned in between of the gasket and the protruding segment , or b) the protruding segment is in between of the gasket and the wedge element . <EOS>