{HEAD ~ A sealing and gripping element} for an expandable downhole tool features a ring supporting a sealing material with radially extending rings into {TAIL ~ the sealing material} during run in 
{ HEAD ~ A sealing and gripping element } for an expandable downhole tool features a ring supporting a sealing material with radially extending rings into { TAIL ~ the sealing material } during run in
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH