The membrane is sealed to {HEAD ~ the spigot} on {TAIL ~ 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 
The membrane is sealed to { HEAD ~ the spigot } on { TAIL ~ 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
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH