{TAIL ~ This seal} could also be accomplished by locking into the plug and hydraulically compressing {HEAD ~ the seal} 
{ TAIL ~ This seal } could also be accomplished by locking into the plug and hydraulically compressing { HEAD ~ the seal }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD