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