Sliding component

A sliding component characterized in that an external peripheral side of a pair of sliding components is a high-pressure fluid side, an internal peripheral side is a low-pressure fluid side, a positive pressure generating mechanism comprising a positive pressure generating groove is provided to a high-pressure side of a sliding surface of a stationary-side sliding component, a negative pressure generating mechanism comprising a negative pressure generating groove is provided to a low-pressure side of a sliding surface of a rotating-side sliding component, and a pressure release groove is provided to each of said stationary-side and rotating-side sliding surfaces so as to be positioned between said positive pressure generating groove and negative pressure generating groove, said positive pressure generating groove, pressure release grooves, and negative pressure generating groove being communicated with the high-pressure fluid side and separated from the low-pressure fluid side by seal surface on the internal peripheral side.

A sliding component characterized in that a pair of sliding components comprise annular bodies, an external peripheral side of the annular bodies is a high-pressure fluid side and an internal peripheral side is a low-pressure fluid side, a positive pressure generating mechanism comprising a positive pressure generating groove is provided to a high-pressure side of a sliding surface on one side of the annular body, a negative pressure generating mechanism comprising a negative pressure generating groove is provided to a low-pressure side, and a pressure release groove is provided between said positive pressure generating groove and negative pressure generating groove, said positive pressure generating groove, pressure release groove, and negative pressure generating groove being communicated with the high-pressure fluid side and separated from the low-pressure fluid side by seal surface on the internal peripheral side.