FIELD: motors and pumps.
SUBSTANCE: invention relates to a sealing ring (1) for the piston rod sealing comprising a retaining ring (2) having a circular inner diameter (M1) and a central axis (M). Sealing ring is also comprises several of sealing segments (3) mounted on the retaining ring (2) with the possibility of moving radially towards the central axis (M). Each sealing segment (3) has a sealing surface (3a) facing the central axis (M) and curvilinearly passing in the circumferential direction (U) relative to the central axis (M), and two parallel to each other side guide surfaces (3b). At both ends the surface (3a) ends on the sealing segment corresponding guide surfaces (3b). Retaining ring (2) contains several guide segments (2a) located spaced apart from each other in the circumferential direction (U). Each arranged one after another in the circumferential direction (U) two guide segments (2a) have facing each other parallel facing guide surfaces (2b, 2c), which are located spaced apart from each other and are made so that the sealing segment (3) is guided by its guide surfaces (3b) along the two side guide surfaces (2b, 2c) and is installed with possibility of movement in the radial direction (R), at that, the guide segments (2a) and the sealing segments (3) follow each other in the circumferential direction (U).
EFFECT: piston rod sealing.
15 cl, 21 dwg
