Uxcell 4 Pcs Rubber Seals for Glass Jars 3.6 inch OD Silicone Sealing Ring for Canning Storage Green

The canning sealing rings are made from durable and soft silicone, which is leakproof, heat resistant, has great airtight sealing, and can be reusable. The mason jar rings are designed to create an airtight seal, preventing moisture or leakage, and maintaining the freshness and quality of the contents inside the jar. To use, simply place the silicone seal on the mouth of the jar and secure the lid, ensuring the seal is properly aligned to create a tight seal. Great for canning, storage, and food preservation, these seals are suitable for preserving fruits, vegetables, jams, and other foods that require an airtight seal for long-term storage.