Sophie B
no..get a new one..before you burn the whole car to the ground...

wiseornotyoudecide
there is an epoxy that is sold at autopart stores. However if is the little elbows on the fuel lines I would replace it as soon as possible. Try getting a brass fitting to replace the crappy domestic plastic one, otherwise it will happen again.

AB
No, thats not something to mess with. Hate to say it but you need to replace it. Gas being flamable is something I wouldnt mess with. a patch is temp and can only get worse if it springs another leak. Call the local auto supply store and ask what options for a connector you have besides the one you have now.

Sam
2 part apoxy or rubber cement maybe