THREADED JOINT WITH SEAL WITHSTANDING HIGH-PRESSURE Russian patent published in 2012 - IPC F16L15/04 

FIELD: machine building.

SUBSTANCE: proposed joint comprises one or two seal rings with truncated-cone part of surface provided with annular ribs extending from inner surface and fitted on internal element surface section behind threaded part in tight sealing contact with external element annular groove inner surface and in tight sealing contact with internal element outer surface via annular ribs. Threaded joint is furnished with hydraulic device to press seal ring to said internal element.

EFFECT: higher tightness.

12 cl, 9 dwg