The fermenting lid is a one-way waterless airlock with a cross cut on top, which only opens when there is enough pressure in the mason jar to force it open to let carbon dioxide escape from the jar, but won’t allow air from the outside to enter into.
* Made of LFGB food-grade silicone, BPA-free, odorless and durable.
* Super easy to use, great fermenting item for beginners. They can be fully sanitized and simply put on the jar, the fermentation gases just slowly leak out.
* Best choice for a small batch of homemade pickle fermenting.
* Fit for any Wide-mouth jars.
* Mold-free and easy to clean, dishwasher safe.
HB Silicone is a full-service silicone manufacturer capable of bringing your silicone product from concept to full-scale production. Our multiple services streamline the custom production process including in-house CNC tool mold making, Prototyping, and compression molding production.