A male connecting element and a connector comprising the male connecting element and a female connecting element are disclosed. The male connecting element comprises a tubular body and a tubular plug, for the passage of fluid, having a flange for hooking up one or more claws of a female element. The body includes a sleeve that is axially movable around the plug between a first position where it is away from the flange, and a second position where it is closer to the flange or in abutment to the flange. The sleeve allows the male element to move axially away then radially clearing each claw of the flange before removal of the male element out of the female element. Advantageously, the claws avoid abutting against the flange of the male element upon uncoupling, thereby minimizing wear and tear of the claws against the flange.