a plurality of {TAIL ~ extensions} integrally formed with said sleeve flange and projecting inwardly toward the interior of said {HEAD ~ sleeve wall} 
a plurality of { TAIL ~ extensions } integrally formed with said sleeve flange and projecting inwardly toward the interior of said { HEAD ~ sleeve wall }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD