END GASKET

An end gasket has a housing, a bushing, a shaft, rotary and not rotary rings, those are in contact one with another. At the flat end friction surface of the rotary ring a circular groove is provided. At the outer section of the working surface of the rotary ring an additional circular groove is provided, to this one there is installed an additional ring, spring-supported in axial direction. In the bushing conical placed in radial directions cavities are provided, those are turned with the tops outside and connected with those to the tightened cavity with which they are separated with balls, those are spring-supported with plate springs, and at the side of the base the cavities are connected by axial channels with circular groove. The rotary friction ring is made assembled, of three and more concentric rings: one inner, and two or more outer ones, those are in contact with non-rotary one-piece friction ring. The concentric rings are installed in the bushing with three and more respective circular grooves separated one from another with bosses in such a way that between the rings and the bosses two and more trapping circular grooves are formed. The inner ring is tightened and fixed without motion, and the outer ones û are tightened in radial direction and movable in axial direction.