Oil seal testing machine cavity

The utility model relates to an oil seal testing device, in particular to an oil seal testing machine cavity. The device comprises a short cylinder serving as a shell, the short cylinder is horizontally arranged, pipe joints are arranged at the top and the bottom of the short cylinder, the pipe joints are communicated with an inner cavity of the short cylinder, and high-pressure-resistant ball valves are arranged on the pipe joints. And a liquid level meter is vertically arranged at the bottom of the short cylinder. An adjusting disc is arranged at the opening of the short cylinder and provided with a center hole, and the disc face of the adjusting disc is perpendicular to the axis of the supporting cylinder. The electric heater is characterized in that an extending part extending outwards is integrally arranged on the lower portion of the short cylinder, a through hole is formed in the extending part, an electric heating rod is arranged in the through hole, a wiring end of the electric heating rod penetrates