{TAIL ~ A series} of passageways 63 extend radially between the inner and outer surfaces 60, 58 of the sleeve 14 above {HEAD ~ the level} of the lip 62 
{ TAIL ~ A series } of passageways 63 extend radially between the inner and outer surfaces 60 , 58 of the sleeve 14 above { HEAD ~ the level } of the lip 62
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH