The housing hub 68 and {HEAD ~ the primary flange} 21 define {TAIL ~ a passage} 70 which opens into a space 56 at the radially inner end of the primary flange and a chamber 57 at the radially outer end of the primary flange 
define
The housing hub 68 and { HEAD ~ the primary flange } 21 define { TAIL ~ a passage } 70 which opens into a space 56 at the radially inner end of the primary flange and a chamber 57 at the radially outer end of the primary flange
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH