are these rubber lined or cardboard lined?

Neither. Just metal caps. They work great though.

WIll these lids fit the Carlos Rossi wine, glass gallons?

Yes. I used them for homemade laundry detergent in Carlo Rossi bottles.

Can i use it with one gallon jug for beer natural carbonation? Can it hold the pressure?

I wouldn’t recommend it but it is possible. Technically, it should be able to hold the pressure if it can hold finished beer (which it does). Because these are disposable, I’d be more worried about them getting stuck because they are a little soft. Good luck!

I am told it is BPA free as well as the red plastisol.

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🍻 Cap Your Creativity with Style!

VERSATILE FIT - Designed to fit most 1/2 and 1-gallon jugs, perfect for any home brewer.
DURABLE DESIGN - Crafted from high-quality metal for long-lasting use.
SEAL IN FRESHNESS - Coated liner ensures a tight, rust-free seal for your brews.
ECO FRIENDLY CHOICE - Reusable caps that reduce waste and enhance your brewing experience.
CONVENIENT PACK SIZE - Comes in a pack of 6, so you’re always ready to brew.

These 38mm white metal growler caps come in a convenient pack of 6, designed to fit most 1/2 and 1-gallon jugs. Featuring a coated liner to prevent rust and ensure a superior seal, they are perfect for home brewers looking to keep their creations fresh and flavorful.

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