The joiner may have one or more other neck portions with respective retaining clips and sealing rings for joining {HEAD ~ one duct} to {TAIL ~ one or more other ducts} 
to
The joiner may have one or more other neck portions with respective retaining clips and sealing rings for joining { HEAD ~ one duct } to { TAIL ~ one or more other ducts }
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 TAIL TAIL