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