A device for the fluid-tight closure of an annular opening between an inner piece, such as a shaft and the portion of the casing which surrounds the

摘要

P a.dispositif of fluid-tightness between the two parts to rotate with respect to the other. / p & & p & characterizes by an element of a section positioned in the annular space, connected in sealed manner at one of the pieces and comprising a surface of a section adapted to cooperate with a surface, he provided for on the other piece, a device for feeding a fluid under pressure in the space of play between the surfaces of section, has a pressure which is greater that three-dimensional of each side, the greater since the surfaces of revolution incline on the axis, for example conical, and since relocatable axially with respect to the other for determining the width of the clearance between them. / p & & p & c.dispositif applicable to an output shaft of a casing. / p