FLEXIBLE JOINT SEALING ASSEMBLY Russian patent published in 2015 - IPC F16J15/32 

FIELD: machine building.

SUBSTANCE: sealing assembly of a flexible joint comprises at least one pair of cup seals with respective spacers, each of the seals is made as a cylindrical bush with a longitudinally protruding sealing jaw and formed by spiral winding of a foil band including a layer of thermally expanded graphite with a carbon bundle distributed evenly along its width, with its further pressing in the axial direction. The cup seals of each pair are installed on a movable element and adjoin each other by their bigger ends and their sealing jaws are directed into opposite sides. Every spacer is made as a bush with its height being greater than the height of the sealing jaw of the respective cup seal, and is mounted in the recess of the respective cup seal formed by the sealing jaw and the smaller end of the respective cup seal adjoining it, the said cup seals with respective spacers are set in the casing groove and are pressed in the axial direction by a pressing element in the axial direction.

EFFECT: reliability and tightness of movable joints.

3 cl, 2 dwg