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