FIELD: machine building.
SUBSTANCE: proposed seal has flexible central part of, in fact, cylindrical common shape mating with that of first and second pipelines and is made of impermeable material. It has, first, mounting surface to allow its attachment to first pipeline and, second, joint surface to allow joint with second pipeline to make tight flexible joint between said first and second pipelines. Said joint surface has peripheral stiffness element extending in longitudinal direction partially central section.
EFFECT: higher reliability of joint.
12 cl, 4 dwg
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