END FACE SEAL Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: end face seal has bushing with a ring projection, rotatable and fixed sealing members mounted coaxially with respect to the bushing, and cylindric spring. From the side of the fixed sealing member the outer side of the bushing is provided with a ring groove. From the side of the ring projection the inner side of the bushing is provided with an additional ring groove and two grooves connected with the ring groove. A spring is interposed between the ring projection of the bushing and rotatable sealing member. The end of the spring are bent out and are received in the grooves made on the ring projection of the bushing and rotatable sealing member, respectively. The ring grove receives a split spring ring the outer diameter of which is greater than the inner diameter of the fixed sealing member. EFFECT: enhanced reliability. 2 dwg