FIELD: construction.
SUBSTANCE: device comprises upper and lower half-bodies, which when assembled produce two cylindrical and a conical parts. With a smaller diameter the device is installed onto the pipeline, and with a larger diameter - onto a case jacket. On the inner surface of end parts of the device there are grooves in the form of a toroidal plane, which serve as seats for a rubber sealing cord. The cord radius is equal to the radius of the toroidal plane, which is made as capable of tight laying of the rubber cord with pressure to seal the space between the outer surface of the sealing collar of the pipe reducer and the inner wall of the device. On the lower surface of the upper half-body at the side of the smaller diameter there may be a drip arranged for passage and sealing of the communication cables protective pipes.
EFFECT: reduced timing for device installation and increased reliability of rubber collar protection.
2 cl, 4 dwg
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