hanger plug

hanger plug

[′haŋ·ər ‚pləg]
(petroleum engineering)
A pressure-tight sealing device placed in the casing below the blowout preventer.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The standing hanger plugs into the wall but also has a battery pack.