The Sentry Tapered Bore Metal Seal (TBMS) incorporates a rounded “bump” profile to create line contact between the seal and the tapered seal bore. As the flange is tightened the seal is radially compressed to create a gas tight metal to metal seal between the tubing hanger neck the seal itself and the seal bore of the adapter. The radial compression force is constant and allows for the seal to be kept even with large changes in temperature cycling. All of this is accomplished without causing the seal material to reach it’s yield point.
Sentry Tapered Bore Metal Seals are utilized on tubing hangers
They can be used in H2S, or CO2 service and are amine resistant
Are rated for all API material classes including HH
Are rated for temperature class L-U (-50⁰ F to 250⁰ F)
Have been performance qualified for API 6A, PR-2, Appendix F