I built a DIY CO2 system and didn't have the money to spend on Silicone. My dad came over and helped me so we first tried some bath tub/shower caulk he had. That lasted less than 24 hours and after 4 hours tracing the leak I sat here with a dumb look for another hour trying to figure out how to reseal the bottle cap.
Well, called my dad and he said "super glue". I was like, no that won't work, but after looking through my house it was the only thing I had.
So, I pulled the cap off put the hose in, and dumped super glue all around it. It worked.
Moral of the story, sometimes you can use whatever you have on hand.
And super glue is still one great useful item. 
Well, called my dad and he said "super glue". I was like, no that won't work, but after looking through my house it was the only thing I had.

So, I pulled the cap off put the hose in, and dumped super glue all around it. It worked.
Moral of the story, sometimes you can use whatever you have on hand.