Double-end-face mechanical sealing device

The utility model relates to the technical field of mechanical sealing, in particular to a double-end-face mechanical sealing device which comprises a sealing body, a gland, a static ring assembly and a movable ring assembly, the gland, the static ring assembly and the movable ring assembly are arranged on the mechanical sealing body in a sleeving mode, and a circulating liquid inlet and a circulating liquid outlet which communicate with each other are formed in the outer wall of the gland. The mechanical seal body, the static ring assembly and the moving ring assembly are matched to form a circulation groove communicating with the circulation liquid inlet, the gland is connected with an extension plate, and an insertion hole facilitating moving of the static ring assembly is formed in the plate face of the extension plate in a penetrating mode. A receding area allowing the static ring assembly to slide in the axial direction is formed between the static ring assembly and the gland. The mechanical seal has th