A tube connection piece is rotatably connected to the coupling sleeve and has a portion provided with a sealing ring, {HEAD ~ said portion} extending sealingly into {TAIL ~ a socket} in the connected position 
extending sealingly into
A tube connection piece is rotatably connected to the coupling sleeve and has a portion provided with a sealing ring , { HEAD ~ said portion } extending sealingly into { TAIL ~ a socket } in the connected position
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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH