{TAIL ~ The membrane} is sealed to the spigot on {HEAD ~ an outer face} of the spigot which is configured so that the membrane will be clamped in position during piercing of the membrane by a cutter 
{ TAIL ~ The membrane } is sealed to the spigot on { HEAD ~ an outer face } of the spigot which is configured so that the membrane will be clamped in position during piercing of the membrane by a cutter
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH