FIELD: sealing devices.
SUBSTANCE: invention relates to a contact sealing ring system comprising a contact ring seal (2) having a rotary contact ring (20) and a stationary contact ring (21) defining sealing gap (22) between each other and a solid protective seal (3), which is provided as backup seal in case of failure of contact ring seal (2) and is intended to seal rotary structural element. Protective seal (3) has main part (30) and sealing area (31), which protrudes from main part (30) in axial direction (X-X) and is flexible. Thickness of sealing area (31) in radial direction is less than thickness of main part (30) in radial direction, and protective seal (3) is stationary and has sealing surface (32) on inner perimeter.
EFFECT: disclosed is a sealing ring system.
15 cl, 7 dwg
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