The cap 16 further has a second portion defining {HEAD ~ a small cylindrical cavity} 32 concentric to {TAIL ~ the large female cylindrical cavity} 28 and depending downwardly in an axial direction 
concentric to
The cap 16 further has a second portion defining { HEAD ~ a small cylindrical cavity } 32 concentric to { TAIL ~ the large female cylindrical cavity } 28 and depending downwardly in an axial direction
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH