The present invention pertains to a tubular connection having a stabilized center-shoulder seal. The stabilization of the center-shoulder seal is achieved using at least one run-out section of thread adjacent to the center-shoulder seal configuration of each connection member. Typically, the at least...http://www.google.fr/patents/US5415442?utm_source=gb-gplus-shareBrevet US5415442 - Stabilized center-shoulder-sealed tubular connection
