a bonding material joins the shell and the metallic sleeve, {HEAD ~ the bonding material} including an ETFE powder and {TAIL ~ an elastomer} 
including
a bonding material joins the shell and the metallic sleeve , { HEAD ~ the bonding material } including an ETFE powder and { TAIL ~ an elastomer }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL