{HEAD ~ This arrangement} of {TAIL ~ packing ring segments} and holders provides retractable packing which can close relative to turbine rotor 16 with a minimum pressure drop 
of
{ HEAD ~ This arrangement } of { TAIL ~ packing ring segments } and holders provides retractable packing which can close relative to turbine rotor 16 with a minimum pressure drop
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH