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