FIELD: pipelines.
SUBSTANCE: invention relates to pipe fittings, in particular to construction of multi-layer pressure and suction-suction hoses operating under both excessive pressure and vacuum.
EFFECT: technical result is increase in reliability and service life of flexible hose, to inner and outer diameters of which flange protrusion sealing layer is vulcanized, while holes in the flange protrusion are filled with sealing layer rubber.
1 cl, 1 dwg
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