A sealing enclosure for a fiber optic connector on a cable, the sealing enclosure comprising: an inner body defining a connector volume adapted to receive the fiber optic connector, the connector volume being open at least at a rearward end of the connector volume, the inner body including a clamping section at the rearward end, an outer body adapted to move relative to the inner body, preferably both slid along the inner body and rotated with respect to the inner body, and a cable seal arranged at the rearward end of the connector volume and adapted to sealingly engage the cable when compressed radially, wherein the clamping section is configured to be radially compressed onto the cable seal, which in turn is radially pressed onto the cable and thus seals off any gap between the cable and the cable seal, when the outer body is in the forward position, and at least one locking element of the bayonet type is present at a forward end of the outer body; characterized in that the clamping section has radially deflectable tongues which extend from the inner body along the cable in the rearward direction, wherein the tongues define a retainer for receiving the cable seal in the annular space between the tongues and the cable, and the tongues are configured to radially overlap the outer surface of the cable seal when the cable seal is received in the retainer at the clamping section; and in that the outer body is provided at its rearward end with a closure section that essentially comprises a wall section which is configured to face the cable seal and to be pressed against the cable seal or the clamping section when the outer body is in the forward position or is being moved into the forward position. an inner body defining a connector volume adapted to receive the fiber optic connector, the connector volume being open at least at a rearward end of the connector volume, the inner body including a clamping section at the rearward end, an outer body adapted to move relative to the inner body, preferably both slid along the inner body and rotated with respect to the inner body, and a cable seal arranged at the rearward end of the connector volume and adapted to sealingly engage the cable when compressed radially, wherein the clamping section is configured to be radially compressed onto the cable seal, which in turn is radially pressed onto the cable and thus seals off any gap between the cable and the cable seal, when the outer body is in the forward position, and at least one locking element of the bayonet type is present at a forward end of the outer body; characterized in that the clamping section has radially deflectable tongues which extend from the inner body along the cable in the rearward direction, wherein the tongues define a retainer for receiving the cable seal in the annular space between the tongues and the cable, and the tongues are configured to radially overlap the outer surface of the cable seal when the cable seal is received in the retainer at the clamping section; and in that the outer body is provided at its rearward end with a closure section that essentially comprises a wall section which is configured to face the cable seal and to be pressed against the cable seal or the clamping section when the outer body is in the forward position or is being moved into the forward position.