Iggy wrote:

Don't clean nor take anything apart and let a big blob seal off the end of the
nozzle/tube. When you need it again, in the same day or week, then cut the
blob off with a bit of nozzle/tube. If it's months later, then you'll need to
replace the nozzle/tube...I've had success with this for a can up a year old.

The instructions recommend finishing the can off within one hour!