SEALING DEVICE

摘要

The invention relates to a device that is used to seal a cavity which is formed between a part that can rotate and a fixed part. The invention is particularly suitable for use in incidence sensors used in aeronautics. The inventive device comprises a cavity (8) which is formed between the mobile part (2, 4) and the fixed part (6). A seal assembly (11) is used to ensure that the cavity (8) is leakproof. Said seal assembly (11) is produced using a fluid which is located between the fixed part (6) and the mobile part (2, 4). Moreover, said device comprises means (24) for establishing an air pressure equilibrium between the inside of the cavity (8) and the outside thereof.