Dichtung mit selbstregelndem Sperrfluessigkeitsdruck

摘要

This specification discloses a barrier seal in which the pressure of the fluid is being sealed is opposed by the flow rate of a buffer fluid with a movable ring interposed between the two. This ring is movable axially under the influence of the differential which obtains between the pressures of the sealing fluid and buffer fluid. Appropriate passages are provided for the buffer fluid and seals are provided between the movable ring and the shaft and housing in which the barrier seal is installed.