FIELD: machine building.
SUBSTANCE: invention is intended for sealing. Lock for a strip for tightening the first chamber relative to the second chamber; at that, the strip, namely metal strip, passes through both chambers, includes at least one sealing device which includes at least two gate valves movable in relation to each other and having at least one sealing surface fitted on the edge outline of the sealed strip. At least two gate valves are made in the form of plates and located parallel to each other and adjoin each other.
EFFECT: good sealing property.
93 cl, 18 dwg
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