In one embodiment the heat shield acts as {HEAD ~ a stopper} to prevent {TAIL ~ the vacuum cap} from moving upwards and helps the vacuum cap from absorbing multiple mechanical stress in order to protect the vacuum cylinder from being damaged 
to prevent
In one embodiment the heat shield acts as { HEAD ~ a stopper } to prevent { TAIL ~ the vacuum cap } from moving upwards and helps the vacuum cap from absorbing multiple mechanical stress in order to protect the vacuum cylinder from being damaged
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH