Patent ID: 11125334

Abstract:
A hydrodynamic sealing component includes a land portion and a plurality of hydrodynamic grooves. The hydrodynamic sealing component may include sets of shallow grooves and deep grooves. In embodiments, the hydrodynamic sealing component may include alternating shallow grooves and deep grooves, or alternating pairs of shallow grooves and pairs of deep grooves. In embodiments, a hydrodynamic sealing component may include at least three sets of hydrodynamic grooves, wherein each set of hydrodynamic grooves may have a different depth, which may be configured to create or maintain hydrodynamic forces over a different operational range. In embodiments, a hydrodynamic sealing component may have a surface area of lands-to-grooves is 1:1 or less. A sealing assembly, which may include a rotor with hydrodynamic grooves on a sealing surface, is also disclosed.