The supportingly position of {TAIL ~ the sealing ring} is free to move radially independent of {HEAD ~ the plurality} of support members 
The supportingly position of { TAIL ~ the sealing ring } is free to move radially independent of { HEAD ~ the plurality } of support members
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH