lids of jars

A jar lid has one simple job: seal a compatible jar so its contents can be stored or carried without spilling. lids of jars are not universal; size, thread and lid style have to match the jar, and a mismatch can prevent a proper seal. By our assessment, a replacement lid is useful when it fits the container, but the category name alone says nothing about material, lining or whether it is suitable for preserving food. Some lids are designed for ordinary storage, while canning requires lids intended for that purpose and a sound sealing process. Compared with cling film or a loose cover, a fitted lid is easier to stack and reuse, but it depends entirely on a correct match. Check the jar’s opening and intended use before choosing one; an attractive-looking lid that does not fit will not protect the contents.