SPHERICAL RING SEAL ELEMENT AND PROCEDURE FOR ITS FABRICATION Russian patent published in 2012 - IPC F16J15/12 

FIELD: machine building.

SUBSTANCE: spherical base ring of a seal element comprises heat-resistant material and a hardening element that are compressed and interwoven with each other to give them structural integrity. The heat-resistant material included in the outer layer, a solid lubricant formed by the lubricant composition and a hardening element made ​​of metal wire mesh are compressed so that the solid lubricant and the heat-resistant material fill cells of the metal wire mesh of the hardening element and the solid lubricant, the heat-resistant material and the hardening element form an entirely mixed form. The external surface of the external layer is turned into a smooth surface whose surface formed by a hardening element and the surface formed by the solid lubricant are presented in a mixed form.

EFFECT: invention improves seal element reliability.

14 cl, 19 dwg