SEALING IN FORM OF CENTRAL PROTUBERANCE FOR PIPE CONNECTION Russian patent published in 2017 - IPC E21B17/42 F16L15/00 

FIELD: oil and gas industry.

SUBSTANCE: metal-to-metal sealing system, connecting the first and the second pipe elements contains the first sealing configuration, disposed on the first pipe element and the second sealing configuration, disposed on the second pipe element. The first sealing configuration contains the first ring recess and the first ring tooth and the second sealing configuration contains the second ring recess and the second ring tooth. The second ring tooth is located within the first ring recess. The surface of the second ring tooth cooperates with the adjacent first ring protuberance surface, so as to define the first protuberance. The first ring tooth is located within the second ring recess. The surface of the first ring tooth cooperates with the adjacent second ring protuberance surface so as to define the second protuberance. The sections of the first sealing contact of the surfaces elements are axially spaced from the first and the second protuberances.

EFFECT: effective sealing and problems preventing in the area of high loads of the deformable central protuberance in the pipe elements joints.

23 cl, 5 dwg