We know it's important for you to know where your jar gaskets and seals come from. No guesswork with our seals! Our FermentEm(tm) Mason Jar Seals are custom made in the USA from only FDA-Approved BPA-Free Silicone. Create an airtight seal when fermenting your favorite foods, and keep liquids in when transporting or (COLD ONLY) temporarily storing, using a wide mouth plastic storage cap. Our silicone seals are easy to clean and washable. Not to be used for canning. Please clean before use.
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