wherein the first contact surface is on a first elastic region of the first lining part or {HEAD ~ the second contact surface} is on {TAIL ~ a second elastic region} of the second lining part 
is on
wherein the first contact surface is on a first elastic region of the first lining part or { HEAD ~ the second contact surface } is on { TAIL ~ a second elastic region } of the second lining part
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH