Test apparatus for moisture permeability test

The utility model relates to the technical field of moisture permeability testing of textile fabrics and packaging materials. When a sample is installed before an existing moisture permeability testeris tested, the problem of deviation of an effective moisture permeability area caused by the fact that a sample wax sealing ring and a test cup are not concentric easily exists. The utility model provides a tester for moisture permeability test, which comprises a test cup and an aluminum mold base, at least three buckles are arranged on the outer edge of the top of the aluminum mold base, and theradian corresponding to any two adjacent buckles is smaller than pi; the buckles and the aluminum mold base are integrally formed, and when the buckles are buckled to the outer side of the outer ringof the test cup at the same time, the bottom of the aluminum mold base and the upper end of the inner ring of the test cup are attached and concentric; the sealing wax is aligned with the inner ringof the test cup, so that the