High-pressure integrated electrical equipment pressure-sealing refers to the technology of sealing leaks in high-pressure integrated electrical equipment under high-pressure conditions. High-pressure integrated electrical equipment usually uses SF6 gas as insulation and arc-extinguishing medium. As SF6 gas is easily affected by moisture, the increase in trace moisture can rapidly degrade the insulation and arc-extinguishing properties of SF6 gas, making moisture management of SF6 gas crucial.