So far I found this to be the best of the plastic cans.
There is a thriving business making nozzles and air vents for CARB cans. The "racing" cans, like VR, that are not for street use avoid that nonsense. Some outfit sells spouts and drill a hole and snap in air vents to fit many cans. There are endless vendors on ebay selling those vents. The spouts are black but in the states where they are illegal, they sell a clear spout "for water". LOL.Unless you get lucky and find a NOS can someplace, any new gas can sold in America will have a CARB compliant nozzle. The carb compliant nozzles are POS's IMO (regardless of who makes them) and you can just about guarantee they will leak and they pour at a painfully slow rate.
Your best bet is to find an older can. The best IMO are the Scepter MFC's (Military Fuel Canister). I have 6 of the 20L. (aka 5 gal) cans and they do not leak and will last a life time. The big downside to these is because of the carb requirements, these are no longer available here (new) so prices on used versions of these cans have really skyrocketed.
They also made a 10L (2.5 gal) version is a better size for some purposes but even harder to find these days
The 'No-Spill 206 Flexible Spout Extension' fixes that issue for fueling vehicles. It works great for vehicles and large tanks, but if using it on a small tank it does hold a bit of reserve fuel for when the no-spill feature kicks in so you might actually spill a little if you're just blindly topping a chainsaw, blower, etc off.
We all have other jobs, but the family business has been a tree company since the 1980s. We have 7 or 8 (at least) No-Spill cans, several 2.5gal and several 5 gal, and about half of them have the extension as a permanent fixture. I believe No-Spill's extensions go for about $5-6, but I'm sure you could easily make your own for next-to-nothing, especially if you don't need the stopper.
No-Spill is the best thing that ever happened to gas cans. They blow away our old metal JustRite type II safety cans, all of which cost well over $100 each, and now they just sit gathering dust since the first time we used a No-Spill. Safety cans are nice and have their place, but even when you're trying to be careful filling a saw a little bit of spilled mix onto a customer's grass or concrete can turn into a pretty big deal. It'll kill grass for sure and can leave stain on concrete, either of which can result in an unhappy customer. No-Spill ended that for good. They pour as fast or faster than old-school gas cans and they prevent overflow even when you can't see what you're doing. Just stick the nozzle in the tank and push the button & hold it until it stops pouring. Too easy!
Thanks Outlaw. Rlitman, the O-rings are Buna-N (nitrile) so they are good for gasoline. But Viton would work well too.
Maui
The only thing that goes into this and my other smaller gas cans is ethanol free fuel. I use them to fill my lawn tractor, snow blower, weed trimmer, etc. and learned a long time ago that you don't want fuels containing any ethanol to go into those machines. It destroys the gas lines. So I'm good!
