Patent ID: 7857321
Filing Date: 2010-12-28
Classification: F16J

Abstract:
1. A seal device, comprising: a stator which locates into a housing of a piece of rotating equipment; a rotor which locates on a shaft of the piece of rotating equipment; axial restraining means between said rotor and stator; an air inlet and an air outlet and, extending therebetween, an air passage, said air passage being defined, at least partially, by circumferentially extending surfaces of, at least one of, said stator and said rotor surfaces; and, a rotor-to-stator contacting seal member in the form of a deformable toroid provided in the air passage, said rotor-to-stator contacting seal member is located on a pair of inclined, substantially parallel surfaces on said stator, wherein said pair of inclined, substantially parallel surfaces provide a radially smaller gap adjacent to said rotor and said rotor-to-stator contacting seal member is circumferentially stretched during assembly onto said stator, being urged down an incline created by said pair of inclined, substantially parallel surfaces towards a smallest radial gap.