Device for testing water tightness of plugging material

The utility model provides a water tightness testing device for a plugging material. The sealing material water tightness testing device comprises a main body, a testing unit and a cover plate, the main body is an open container with a cavity, a bottom surface and an annular top surface; the test unit is arranged in the cavity of the main body; the cover plate is arranged on the annular top surface of the main body; the testing unit comprises a frame, a plugging material to be tested and a metal rod; the frame is a cylinder with a through hole, the metal rod is arranged in the through hole of the frame in a penetrating manner, and a to-be-tested plugging material is filled between the wall of the through hole of the frame and the metal rod; a groove with a downward opening is formed in the bottom surface of the cover plate; the cover plate is provided with a quick connector, a barometer and a drainage through hole; a plurality of through holes are formed in the bottom face of the body. The device for testing