{HEAD ~ A portion} of {TAIL ~ the first and second layers} can function as a frangible seal that is configured to be torn away by a user 
{ HEAD ~ A portion } of { TAIL ~ the first and second layers } can function as a frangible seal that is configured to be torn away by a user
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH