The plug is specially designed for introduction of packing in the 360 degree fashion around the opening in which {HEAD ~ the plug} is employed to insure {TAIL ~ uniform distribution} of the packing and to minimize channelling or the like 
is employed to insure
The plug is specially designed for introduction of packing in the 360 degree fashion around the opening in which { HEAD ~ the plug } is employed to insure { TAIL ~ uniform distribution } of the packing and to minimize channelling or the like
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH