Jillmo Fermentation Lids for Wide Mouth Mason Jars, Stainless Steel Auto Venting Fermenting Lid Kit with Airlocks & Silicone Grommets for Pickles, Kimchi & Sauerkraut, 4 Pack, No Jars Included

I'm absolutely thrilled with this fermentation kit! The stainless steel lids are high quality and fit my wide mouth mason jars perfectly. The airlocks work flawlessly - they let the CO2 escape while keeping oxygen and contaminants out, which has resulted in consistently successful ferments. What I love most is how easy this kit is to use and clean. Everything I needed came in one package, and the silicone grommets create a perfect seal. I've been fermenting sauerkraut, pickles, and kimchi with zero issues - no mold, no failed batches. The stainless steel construction feels durable and looks professional in my kitchen. It's also a much more sustainable option than constantly buying fermented foods from the store. If you're new to fermenting or looking to upgrade your setup, I highly recommend this kit. It's made the whole process foolproof and enjoyable!

Shouldn't be used with high salinity or acidic solutions. Will corrode if exposed to boiling water or high salt/acid content. Keep kids out of contact with brew. Lids are airtight without any pressure. Nicely designed one piece lid and the hole is lipped. The gasket is one piece and slightly smaller than the snout of the airlock. This allows the snout to be pushed in and pushes gasket out slightly, holds well. Good seal. My mead started bubbling within 30 minutes and the valve could easily be seen bobbing up and down every few seconds. Do not overfill the valve. only needs to be filled maybe an eighth of an inch above the slots in the bobber. Lid can be pressed once on a jar, it will go up and down with pressure changes, good way to test it. Overall I love the lids. The steel could be higher quality but as long as you hand wash and sterilize they work just fine. Extra gaskets were included with mine. Good quality plastic on the valve pieces, not thin doesnt seem like itll crack after many uses

These are mostly great, but got a little yucky by the end of a 2-3 week fermentation. I would’ve given them 5 stars if the material (stainless steel) were more solid—this steel felt light, thin, and somewhat flimsy, but the gaskets and plastic components worked great, and because they disassemble easily, cleaning was quicker and easier than I expected. Definitely better than trying to use regular mason jar lids and trying to “burp” them regularly (what a pain). The juices did overflow a bit, but otherwise it was trouble free. Highly recommend storing them in a sink if you’re able to, makes any brine leaks a minor issue, vs. staining or damaging the countertop.

Was making sauerkraut and getting ready to put in the jars to ferment. Opened the 4 pack of fermentation kit wide mouth. Never received the grommets for the lids. Everything else looks and works good please send grommets I purchased in Aug of 2025

It took me a long, long time to gather the courage and initiative to try fermenting hot peppers. Because of the extraordinarily hot summer and long growing season in 2022 I harvested the last of my hot peppers in November. I started four 16 oz jars of these with a 3% brine (using a scale). I let them ferment for three months and there was not a speck of any kind of mold or fungus on them whatsoever. I did see a bit of whiteness settling at the very bottom of the jars and was afraid it was that kahm yeast I’d heard about; however, after some Google research I discovered that it is nothing more than some of the normal bacteria dying off (due to having unfavorable conditions) and is totally natural in the bottom of the jar. And the peppers are divine! I blended some up into hot sauce and others we add onto sandwiches etc. I’ve already ordered a few more sets and I am super excited to try making sauerkraut, kimchi, radishes etc. I know people do ferments without these special gadgets but I would so much rather use them and have perfectly clean ferments then have to scrape off some mold, because every time I read somewhere to “just scrape off the mold” it makes me feel a little bit funny inside.

I used to Can Jam Jelly and Preserve years ago but like most women today I was a single working mother of 4 children and one just doesn't have time to do this. My children are now all grown and gone and have children of their own. When we did fermenting it was remembering when to do things like digging it up out of the ground releasing the gas putting cap back on shaking it releasing the gas and putting the cap back on putting it back in the ground and covering it with dirt. I don't know who invented this device but it makes life so much easier when fermenting. Your product is strong durable and works great and makes fermenting very easy to do with less work I plan on ordering a few more of them sometime early next week. Sincerely, Rhonda Clark

Background: more than 20 years making sauerkraut, and fermented cucumber pickles. Background in metals chemistry. These fermenting lids seal resonably well, the silicone jar seal and the airlock grommet work and seal well. The airlocks are similar to many three part designs sold through home brewer suppliers and, despite the previous reviews, were never expected or designed to be sterilized in boiling water (brewing cleaners and sanitizers are the usual cleaning agents) and the instructions specifically state this. This version of the airlock does not have any fill lines or instructions as to how far to fill the airlock for proper operation and to prevent the solution from being sucked back into the ferment when the process slows down. The metal lids are well made and the rolled edges are far less likely to cut or tear the grommet seal as is common with a raw drilled holes, however the metal that the lids are made of is poor quality and corroded where it came in contact with the soy sauce and vinegar brine for Manul Changachi (Korean pickled garlic). As there are different quality levels of stainless and each has different chemical resistance, these may be stainless, but are not what I would have expected. I haven't had any issues with the sauerkraut or kimchis that I have used these with, however it appears that the user will need to be selective as to what these are used with and what would need a plastic lid instead.

I use this for fermentation of vegetables. The kit comes with lids, silicon seals and grommets, and the airlock assemblies. These work perfectly with the simple components and design. The grommet and seals prevent new air from entering and the user adds water in the airlock assembly to complete the seal. I sometimes use this in conjunction with glass weights which hold the bulk of the food under the brine solution. I have had no issue with mold forming or anything which could cause a ferment to go bad. I have fermented sauerkraut, peppers, and cucumbers using these and have had no issue with using. The lids are for wide mouth jars and work on different types of jars. These are very easy to use and have consistently contributed to a very solid fermented product.

الأسف مخيب لآمال ☹️ الغطاء مختلف عن الوصف الغطاء لا ينفصل وفتحت الغطاء مو نفس مقاس الأنبوب الأنبوب اكبر من الفتحه …. أحسه اقرب لغطاء كوب عصير ومالقيت ولا برطمان مناسب لها 💔 بس الأنبوب ممتاز كما بالوصف رجعته لانه السعر غالي إذا بس ابي استخدم الأنبوب بدون الغطاء

There are no jars that fit these lids! I’ve tried numerous local shops and online shops but I can’t find any that fit.

Cumplen bien su cometido y son una herramienta muy útil para fermentar en frascos. En mi caso preparé col agria. Resuelven el problema de tener que estar abriendo los frascos para dejar salir el gas que se produce por la fermentación y también el consecuente rebosamiento y derrame de líquido (salmuera). Hay que hacer caso de la indicación de dejar un espacio adecuado entre el nivel del producto que envasemos y la tapa o se corre el riesgo de que el líquido se suba. Aclaró que no incluye los frascos y que los frascos deben ser de boca ancha, de 86 milímetros de diámetro (8.6 cm). Recomiendo este producto

Works well

O tamanho da tampa é muito pequeno, isso dificulta a possibilidade de encontrar potes de vidro que possam ser usados. Mas o AirLok funciona perfeitamente bem.