This way you can preserve the delicious vegetables all winter. You can also pickle or air- dry the vegetables growed by yourself in jars and seal them with sealing lids. Use these lids for sealing the mason canning jars that stored spices, sweets, biscuits, fruits, jams, soft drinks, tea or coffee, nails, screws and other small objects. The sealing ring inside the jar lid makes the mason canning jar lids have good sealing performance, air tight and leak free, tightly seal ensures its suitable for keeping food, grains, dressings, drinks fresh, no need to worry about leakage that may contaminate the kitchen or other places after sealing materials. Storage Jar Lids Air Tight Rust Resistant Stainless Steel Wide Mouth Mason Jar Caps for Transform Mason Ball Canning Jars.