SPHERICAL ANNULAR SEALING ELEMENT AND ITS MANUFACTURING METHOD Russian patent published in 2017 - IPC C09K3/10 F16J15/12 F16J15/10 C10M103/00 C10M107/38 F16L23/18 

FIELD: machine engineering.

SUBSTANCE: invention comprises a spherical annular base defined by a cylindrical inner surface, a partially convex spherical surface and annular ends of a large and small diameter of a partially convex spherical surface, and an outer layer integrally formed on a partially convex spherical surface of a spherical annular base. The spherical annular base comprises a reinforcing element of a metal wire mesh and a heat-resistant material comprising porous graphite that fills the cells of the metal wire mesh of the reinforcing element and is pressed so as to form a single unit in the mixed form with the reinforcing element. The reinforcing element, the heat-resistant material and the solid lubricant form one unit on the outer layer.

EFFECT: invention allows to weaken auto-oscillations and to exclude the occurrence of anomalous noise.

26 cl, 20 dwg, 9 tbl, 21 ex