Capping EMT for future use in a wet location

[Carultch]

Does anyone know of a code-compliant method to cap EMT in a wet location?

I've seen people improvise with duct tape, but I wouldn't trust that for more than a few weeks. I've also seen the factory EMT caps used for capping EMT stubs, and I suppose you could use a rubber cap like this:
https://www.mcmaster.com/#6448k34/=14yaiyz

However, is there any listed method? Given that this example may remain capped for years, I'd like to do it the right way.

 

[jaggedben]

Does anyone know of a code-compliant method to cap EMT in a wet location?

I've seen people improvise with duct tape, but I wouldn't trust that for more than a few weeks. I've also seen the factory EMT caps used for capping EMT stubs, and I suppose you could use a rubber cap like this:
https://www.mcmaster.com/#6448k34/=14yaiyz

However, is there any listed method? Given that this example may remain capped for years, I'd like to do it the right way.

Rain tight coupler plus something like this would pass my muster.

If anyone says boo, a weatherhead is also designed for the purpose.