Sliding parts

A pair of sliding parts comprising sealing faces that relatively slide on each other, wherein:

• a fluid circulation groove including an inlet section where a fluid comes in from a high pressure fluid side, an outlet section where the fluid goes out to the high pressure fluid side, and a communication section that provides communication between the inlet section and the outlet section is provided in one of the sealing faces;
• the fluid circulation groove is isolated from a low pressure fluid side by a land section;
• the inlet section and the outlet section respectively including an inlet face and an outlet face facing a high pressure fluid side on an periphery surface in the one of the sliding parts, and
• each area of the inlet face and the outlet face is defined by a width and a depth thereof, the area of the outlet face is larger than that of the inlet face in the communication section in such a manner that pressure of the fluid flowing through the fluid circulation groove is lowered in the communication section.