Muchmore perfect tyre glue- how to use stainless tips?

[Monkeysmate]

Bit of a Noddy one this...
I bought some muchmore perfect tyre glue last week, and it came with a couple of stainless tips, and some heatshrink to seal said tip to the bottle...
My question is, how do I look after this stuff?
Do I have to remove the nozzle and heatshrink after every use? In which case it's a pain!
Are the stainless tips reusable? I tried to clean one in acetone, but it disintegrated!
Does anyone have any advice?
Thanks