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