The utility model relates to a sealing test device, which belongs to the technical field of sealing test, and comprises a test box, the lower end part of the test box is fixedly connected with supporting legs, and an auxiliary
test structure is arranged in the test box; the auxiliary
test structure comprises a storage plate, a partition plate, a test sleeve, a floating plate, a connecting
rope and a storage box, the storage plate is fixedly connected to the inner wall of the test box, the partition plate is fixedly connected to the upper end of the storage plate, the test sleeve communicates with the storage plate, the storage box is fixedly connected to the upper end of the storage plate, and the floating plate is fixedly connected to the upper end of the storage plate. And one end of the connecting
rope is fixedly connected into the storage box. According to the sealing performance
testing equipment, the auxiliary testing structure is arranged in the testing box, the auxiliary testing structure can obviously test unqualified
bottle caps, and liquid in the testing box can be recycled through the circulation structures arranged on the two sides of the testing box, so that the effect of saving resources is achieved; and therefore, the practicability of the sealing performance
testing equipment is enhanced.