4 the pressure can then be released from the drill pipe and the rams closed around them to allow pressure testing of the wellhead connector and other functions the annular pressure acts down on internal sealing component 20 which increases the seal and grip on accordance with the increase of test pressure ball check valve 24 is now free to allow for any fluid that may bypass the seal to escape up the drill pipe so as not to over pressurize the well bore upon pressurization internal sealing component 20 is forced into housing component 30 flared head 25 at shoulder 26 engages under notch 23 when inserted fully into housing component 30 once plug 10 is seated internal sealing component 20 is pushed downward and engaged stably under notch 23 in housing component 30 which forms a receptacle for the sealing component referring now to fig3 adapter 40 is shown removed from housing component 30 and about internal sealing component 20 adapter 40 is preferably attached to housing component 30 via reverse threading to facilitate later removal meaning that turning to the right loosens and turning to the left tightens once the normal bop testing is complete adapter 40 may be right screwed and removed from engagement to housing component 30 virtually any form of engagement between adapter 40 and housing 30 may alternately be employed including traditional threading pins or other releasable engagement internal sealing component 20 remains as it is engaged via notch 23 as previously described fig3 shows adapter 40 after being removed from test plug 10 at.