FIELD: mechanical engineering. SUBSTANCE: sealing device has flexible sealing member with two pressure edges which may be fastened on part of installation. Sealing member has arced sealing zone and is partially embraced lengthwise by tightly adhering holding collars manufactured from spring steel. Holding collars are attached to working surface of supporting member in the vicinity of edge of surface faced to side opposite to both pressure edges. Two corner members are positioned outside sealing zone. Lower side of sealing member adheres to upper side of supporting member. Parts of installation are moved one relative to the other tangentially to apex zone. EFFECT: increased efficiency and simplified construction. 12 cl, 8 dwg
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