Patent ID: 8720903
Filing Date: 2014-05-13
Classification: F16J

Abstract:
1. A seal assembly for providing a seal between a cylindrical member and a housing, with the cylindrical member rotatable around a central axis and relative the housing, said seal assembly comprising: a sleeve secured to the housing and presenting a first edge defining a sealing face having a first smaller diameter, and the sleeve presenting a second edge defining a second larger diameter , with said sleeve presenting overall axial length being different at different circumferential positions of said sleeve; and said sealing face presenting an inclined part extending around substantially one half of said sealing face and angularly relative to the central axis , and said sealing face presenting a flat part extending around substantially another half of said sealing face and normal to the central axis with said inclined part and said flat part thereby forming a bi-directional hydrodynamic face for sealing the cylindrical member and the housing whereby a combination of said fiat part with said inclined part prevents static leakage of lubricants and allows lubrication of the shaft thereby reducing wear and tear of said sleeve.