Lacquer recommendations (rattle can)

Looking for a/some recommendations for a decent clear lacquer aerosol.

I've tried a few, lots are really brittle and flaky once dried.

I've found Halfords Heavy Duty PU lacquer to be pretty good. On bare steel it seems to stick pretty well and keeps the rust at bay for a good while, over paint it takes a while to cure and get hard but once it's dry it's pretty solid.

My only complaint of it is not of the lacquer itself but rather that the cans and caps get a bit gummed up with it and generally I find the can gets to the point where it won't spray before it's all used up.

I've gone to use what looked like a brand new can of it today and the male nozzle that protrudes from the can is leaking so it's spraying out from under the cap making a whole load of mess.

I want a normal rattle can, not a 2 pack/2k thing that only has a short working window.

I see E-Tech have a couple different lacquers and I like their zinc rich primer so might try theirs but anyone found anything else that works well?

I presumed the 'PU' in the Halfords one was an abbreviation of 'poly urethane' but I googled 'poly urethane lacquer' and it's all flooring stuff for wood.

Cheers.

Do graffiti can spray nozzles fit? As the nozzles can give the different spray patterns too.

Try a local automotive paint place and see if they can help.

No, annoyingly the can is male, cap female.

I bought some female graf caps and a thing called the giga cap which is meant to take like paint gun nozzles and work on male and female cans but neither really worked. I think it was as if the little penis(?) on the can was too thin I think it was.

I had a job I needed to finish so popped into halfords the other day to grab a can and also picked up a can of 'Bodyshop lacquer' when I was there, it's a female can so will be compatible with graf caps. Dunno what the actual lacquer will be like.