For instance, the powder or powder blend may include a water swellable powder for blocking {HEAD ~ the migration} of {TAIL ~ water} along the assembly for effectively blocking the migration of water 
For instance , the powder or powder blend may include a water swellable powder for blocking { HEAD ~ the migration } of { TAIL ~ water } along the assembly for effectively blocking the migration of water
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH