FIELD: sealing devices. SUBSTANCE: device includes sealing member, sealing collar made of single- channel or multichannel fiber-optic cable, as well as light collector. Device has fiber-optic components and circuits to determine seal integrity. EFFECT: obtaining information on seal integrity by visual or automatic methods, as well as coding the seal and reading out information from the seal needed for commercial activity, and allows one to enhance reliability and widen functional possibilities. 3 dwg
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