HYDRAULIC GASKET SEAL FOR FORWARD PAIR Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: protecting projection is provided from the side of action of working pressure in front of a ring sealing projection. Tops of adjacent projections are arranged along a straight line which is inclined to a straight line passing through bases of the projections at an angle which is no more than 3-4°. The top of the angle points in direction of action of working pressure. Depth of ring axial groove is no less than a distance between face and top of the sealing projection. EFFECT: enhanced reliability. 3 cl, 4 dwg