To provide a sliding component which is capable of promoting circulation of a fluid in a sliding face while realizing both sealing and lubrication which are opposing conditions and is capable of preventing the generation of a deposit on the sliding face to maintain a function of sealing the sliding face over a long period. A sliding face of a stationary-side seal ring 6 is provided with a fluid circulation groove 10 which communicates with a high-pressure fluid side via an entrance portion 10a and an exit portion 10b and is separated from a low-pressure fluid side by a land portion. A rotating-side seal ring 5 is formed to have a larger outer diameter and a smaller inner diameter than the 6 stationary-side seal ring. A groove 15 into which a claw 3c of a rotational force transmission member for transmitting a rotational force of a rotating shaft is loosely fitted is provided on an outer periphery of the rotating-side seal ring 5. A width of the groove 15 in a circumferential direction is smaller than a length in the circumferential direction between the entrance portion 10a and the exit portion 10b of the fluid circulation groove. WMR / WSR is set within a range of 0.75 < WMR / WSR < 1.4, where WMR is a face width defined between an inner diameter of the groove 15 of the rotating-side seal ring 5 and an inner diameter 6b of the sliding face of the stationary-side seal ring 6 and WSR is a face width of a sliding face of the stationary-side seal ring 6.