The CC021HU is a white Child resistant certified lid with a neck size of 20-400. This cap has a FS5-8 foam liner (FS 5-8 is a heat induction foil inner seal which will provide a tamper-evident bond). This is a universal liner and is good for plastic and glass bottles has a backing thickness of .02. The liner has "sealed for your protection" in red writing on the top of the liner. This is recommended for Liquids. Great for dry products, fruit juices, milk, glass cleaner, peroxide, and spices. It will seal to most containers. Not recommended for products containing oil.