A non contacting seal utilizing a tortured path for the escape of the fluid. Utilizes a series of pressure drops to reduce the leakage.
An intricate combination of metal discs and cups designed to prevent foreign matter from entering balls, rollers or needles of a bearing unit and to retain lubricant in that unit.
device for preventing leakage of gas on the gas generator shaft in a turbine. A labyrinth consists of a series of projections on the rotating element running in close contact with grooves on the stationary element.