Sealing system for the rear lubricating chamber of a jet engine

A jet engine comprising:

• a shaft driven by a low pressure turbine superimposed coaxially outside said shaft, said shaft being supported, at a rear, by a rolling bearing situated between said shaft and said low pressure turbine and housed in a lubricating chamber in which an oil mist is receivable, said lubricating chamber comprising an inner rotating part linked to the shaft and an outer fixed part separated by a first annular seal, and
• a pressurized recovery chamber, arranged outside said first seal and comprising two parts, a fixed part and a moveable part separated by said first seal, wherein said recovery chamber is a single one and has a second seal, situated radially externally in relation to said first seal and wherein said second seal is situated downstream from the rotor of said turbine, and wherein an oil discharge orifice is provided in the lower part of said recovery chamber.