US Patent 11525512 Seal ring

Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring for sealing a clearance between a rotary shaft and a housing includes; inclined grooves formed at a sliding surface so as to be arranged in a circumferential direction, the inclined grooves being closed on an outer diameter side thereof and configured to generate a dynamic pressure; and supply grooves opening on a sealed fluid side and communicating with an inner diameter side of the inclined grooves.