DetailsThese 38mm Metal Screw Caps fit the 1/2 & 1 gallon jugs that we sell.
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Browse 1 question Browse 1 question and 4 answerswhat preparation is needed to use these? Boiling and sterilization prior to use?BEST ANSWER: Not sure if the extra step is necessary, but we boiled the caps for about a minute before using them. It seems to create a better seal if they're hot. We heard some sanitizing solutions can cause rust so we never tried that. We did use a winemakers' potassium metabisulfite solution to sanitize the bottles beforehand. Hope this helps! Happy brewing :)