FIELD: construction.
SUBSTANCE: threaded connection element is implemented with outer threaded part and sealing element being wounded inside thread coils. The protective shell covers outer threaded part and made from flexible material. It is intended for sealing element retaining in the thread coils. The sealing element is comprised of a long-fiber or filamentary material. There is no sealing element on the front end of the outer threaded part. The protective shell is linked with form constraint of the related thread coil in axial direction of the outer threaded part. The protective shell is disclosed by the invention form the structural point of view.
EFFECT: invention provides for improving reliability of threaded connection element.
41 cl, 7 dwg
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