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I am so happy you sell these! Perfect for freezing food/liquids. Wonderful for my husband's home-brewed fermented drinks.
Yes--they work. No leaks. Liquids stay in the jar!
I am using a wide mouth sili seal for my newly made sauerkraut ( made with pickle pipe and pickle pebble). The acidity from pickles discolored and rusted the metal mason jar lids. Sili seals also seal up my home made mayonnaise and salad dressings, and are big improvements over the metal lids for the same reasons as the sauerkraut reason given earlier. Will probably get the normal mouth sizes, too. So handy!
They work great. I'm using them to freeze breastmilk in mason jars and they work really well for me.
I was looking for some kind of top to use with the 4oz mason jars I planned to freeze breastmilk in for my return to work. These did the trick! Nice to know whatever touches the top is touching food grade silicone. Added bonus is they’re easy to write the date on and to wash writing off for the next use!