Canning Lids Suitable For Wide Mouth Mason Jars,100% Fit & Airtight for canning food, jams, fruits, biscuits etc. These wide mouth canned lids can bring a lot of convenience to your cooking process. We can use wide mouth mason jar lids to make all kinds of jams or cans as you like. Wide Mouth Jar Lids Set Specification: Color: Silver Material: Tinplate Metal Quantity: 150 pieces wide mouth canning lids Jar Lids Size: 3.26 inches / 86 mm, outer diameter Wide Mouth Canning Lids Features: 1.Tinplate canning lids are not easy to rust, ensuring durability. 2. Canning jar lids contain silicone rings, make Mason Jar Lids have good sealing performance, air tightness and non-leakage, ensuring air tightness. Keep your food healthy in jars. 3. Can withstand high and low temperatures, The canning lid can be used and replaced separately, which is more economical. About use： Split-Type Lids include canning jar lids wide mouth ，let the canning lids and canning jars bands work together can reusable leak proof. Heat the canning lids in hot water,heating softens the sealing compound.Put on our lids on the ring cap, please be careful not to tighten it too tightly, so as to better let the air out and ensure the tightness. Heat the mason bottle in a pot under cold water to boil 8 to 10 minutes.Vacuum pressure caused by the boiling water bath pulls the inner lid down and causes an air-tight seal.helping it form an airtight seal with the jar. The canning rings is there to hold the inner lid in place until the vacuum seal takes effect.This ensures a tight, sanitary seal.And the thread design on the top of the canning ring canning increase the friction of the hand, making it easier for you to seal and open cans when making cans. Jar bands are not needed on stored jars. They can be removed easily after jars are cooled. When remov