HYDRAULIC CARTRIDGE Russian patent published in 2018 - IPC B23B31/30 

FIELD: manufacturing technology.

SUBSTANCE: hydraulic cartridge comprises housing (10), fixed seat (20), rotating seat (30) and a plurality of flexible sealing elements (40). Fixed seat (20) is fixedly mounted in cartridge housing (10). Rotating seat (30) is rotatably mounted on fixed seat (20) and interacts with the fixed seat, forming gap (90) between them. Each of sealing elements (40) comprises first annular portion (42) fixedly mounted on fixed seat (20), thinned portion (41) extending from first annular portion (42) and passing through gap (90), and second annular part (43) which is connected to the end of thinned part (41), which is distant with respect to first annular part (42), and is located adjacent to rotating seat (30).

EFFECT: improved sealing of the rotating seat is achieved.

8 cl, 7 dwg