{TAIL ~ The field} of the invention is sealing and retaining assemblies for downhole tools and more specifically downhole tools set by {HEAD ~ expansion} such as, for example, packers, bridge plugs or liner packers 
{ TAIL ~ The field } of the invention is sealing and retaining assemblies for downhole tools and more specifically downhole tools set by { HEAD ~ expansion } such as , for example , packers , bridge plugs or liner packers
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