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