Abstract: A locking element for detachably fixing a fluid-carrying plug to a connector, including, a locking element having at least one spring element, by means of which the locking element is moved automatically into a locking position with the connector as the plug is inserted, and held in its locking position, wherein the locking element has a limb that is moved at right angles to an axis of the connector, in which limb there is formed a bore for the plug to be led through; and characterized in that the locking element consists of a spring steel and the spring element is formed in one piece therewith.

Abstract: The invention relates to a locking element (30) for detachably fixing a fluid-guiding plug (40) to a connector (10). To facilitate handling during coupling and decoupling, the locking element (30) has at least one spring element (37) or is connected to or engages with such an element, by means of which spring element the locking element is autonomously brought into a locking position with the plug (40) and is held in this locking position. The invention also relates to a locking system for detachable locking of a fluid-guiding plug (40) to a connector (10) in which a locking element (30) of this type is used.