A multi-dimensional zero-escape sealing device, comprising a frame, a gas compressor disposed at an upper part of the frame, and a gas tank disposed at a lower part of the frame. The gas compressor comprises an inner housing and an outer housing (1). The upper part of the outer housing (1) has a first gas inlet (7). The gas tank comprises a tank body (9), and a second gas inlet (18) communicating with a first gas inlet (5) is opened at the top of the tank body (9), and a second gas outlet (19) is opened at the bottom of the tank body. The gas compressor used in the present sealing device is additionally provided with a plurality of accessory air chambers (10, 29), such that the leakage rate of gas during gas compression is greatly reduced. The structure is relatively simple, and the manufacturing cost is low.
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