FIELD: oil industry; storage of oil and oil products. SUBSTANCE: seal has paired hinged sections covered by aprons and located over perimeter of roof. Sections in pair have two folds one of which is arranged higher than joint, and the other, lower than joint. Ends of folds are provided with sliding sealing arrangements. Folds are connected by extension springs. EFFECT: prevention of oil losses. 3 cl, 3 dwg
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RU2103209C1 |
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RU2096565C1 |
