FIELD: mechanical engineering.
SUBSTANCE: threaded connection comprises a gasket ring placed between a nipple and a cuff and located in a groove between an end of a threaded portion and a cuff tip. The gasket ring has a first bearing surface and a second bearing surface axially arranged opposite to the first bearing surface. An external surface of the gasket ring has at least two projecting stiffening ring. An internal surface of the gasket ring in an unloaded position represents two circular conical surfaces tapered to the centre of the gasket ring and coupled by a roller.
EFFECT: invention provides higher reliability of the threaded connection.
9 cl, 4 dwg
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