FIELD: sealing.
SUBSTANCE: invention relates to a floating annular seal for sealing a rotating structural element, including a solid body (20) with a first throttle surface (21) directed radially inward, a second throttle surface (22) directed radially inward, and a first circumferential groove (23) on the inner perimeter of the solid body (20), wherein said first groove (23) is located in the axial direction (X-X) of the floating annular seal between the first throttle surface (21) and the second throttle surface (22). The solid body (20) therein also includes a third throttle surface (25) directed radially inward, wherein a second groove (26) is located in the axial direction (X-X) of the floating annular seal between the third throttle surface (25) and the second throttle surface (22).
EFFECT: invention simplifies the sealing structure.
10 cl, 3 dwg
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