SEALING CUP Russian patent published in 2012 - IPC F16J15/16 

FIELD: machine building.

SUBSTANCE: sealing cup includes rigid annular base of rectangular cross section, inner and outer flexible sealing edges, inner and outer annular edges located on opposite end from the above rigid annular base, which form a single structure with rigid annular base and annular cavity open on the side of inner and outer annular edges. Inner and outer flexible sealing edges have sealing edge on internal and external surface respectively spread to outer edge from one side of rigid annular base for tight contact with one of the above elements, as well as includes elastic expansion ring arranged in the above annular cavity between flexible sealing edges and rigid annular base. Flexible sealing edges envelope and retain at least partially the elastic expansion ring in annular cavity. Interrelation between design parameters of sealing cup is described.

EFFECT: invention improves the seal tightness.

5 cl, 6 dwg