Originally Posted by
noglider
Once I open a little tube from a patch kit, it starts drying out. Next time I use it, I might find it to be empty, and the road is a bad place to find out. I try to avoid using those tubes at all.
Roll it up like when your rolling a toothpaste tube making sure all the air is out of the tube and screw the cap on tightly. I've had tubes last for several years this way.