These silicone seal rings for jars are ideal for creating a secure, airtight environment for your fermentation projects. Whether you're brewing kombucha, fermenting vegetables, or making homemade pickles, these gaskets that your jars remain sealed and leak-proof. To use, just position the silicone ring on the jar lid and tighten it to maintain the practical seal. Features - Color: White -Material:Rubber - Size: 1.70X1.70X0.60cm/0.67X0.67X0.24in -Protective seal: the fermentation jar lid gasket a tight seal on lids, safeguarding your food from oxygen and maintaining freshness - fermentation: keep your fermentation process going longer with this product, which works seamlessly with an to enhance enzyme activity -Excellent airtightness: the rubber gasket provides a strong seal with the , effectively preventing oxygen from entering and spoiling your ferment -Universal fit: compatible with various , lids, and straws, this gasket is a versatile tool for all your fermentation needs - jar conversion: easily convert jars into fermentation containers with these gaskets, ideal for brewing , , and more Package list: 50pcs x gasket