[BlindHandyMan] re sealing a gap filler tube

[Agent86b]

Hi all,
I wish to use a gap filler that is in a cartridge. It is a clean up 
with water product.
After I have taken the cartridge out of the calking gun what do you 
all do in resealing the cartridge so you can use the rest of the tube 
later. I used to put a roofing nail back in silicon cartridges and 
that appeared to work ok.
Thanks for any advice.
Max.