In the embodiment of the present invention illustrated in FIGS 1 and 2, {HEAD ~ the reinforcing agent} 16 is {TAIL ~ an O ring} placed between the barbs 12 of the connector 10 
is
In the embodiment of the present invention illustrated in FIGS 1 and 2 , { HEAD ~ the reinforcing agent } 16 is { TAIL ~ an O ring } placed between the barbs 12 of the connector 10
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH