The sealing ring has a ring section received in another groove in the outer surface of the neck portion and a resilient skirt which provides {HEAD ~ a seal} between {TAIL ~ the neck portion} of the joiner and the duct 
between
The sealing ring has a ring section received in another groove in the outer surface of the neck portion and a resilient skirt which provides { HEAD ~ a seal } between { TAIL ~ the neck portion } of the joiner and the duct
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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