{HEAD ~ A silicone rubber} or a thermoplastic elastomer in liquid form may then be injected through {TAIL ~ a funnel} associated with mould half B so as to form via casting the internal flexible membrane 
injected through
{ HEAD ~ A silicone rubber } or a thermoplastic elastomer in liquid form may then be injected through { TAIL ~ a funnel } associated with mould half B so as to form via casting the internal flexible membrane
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH