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