In addition, the method includes re injecting {HEAD ~ low density gas} from a hole penetrating the hermetically sealed disk enclosure from an exterior of the disk drive to {TAIL ~ an interior} of the disk drive 
to
In addition , the method includes re injecting { HEAD ~ low density gas } from a hole penetrating the hermetically sealed disk enclosure from an exterior of the disk drive to { TAIL ~ an interior } of the disk drive
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH