This 24 mm (.94 inch) Made in USA Pressure Sensitive Foil Safety Seal requires no equipment to seal and comes with a foil under liner with no foam anywhere on the seal meaning this seal is designed to keep liquids stored safely with no contamination from decaying foam for a long time. The all-foil construction is what gained it approval for food, pharmaceutical and cosmetic packaging. Folks, it doesn’t get any better than this. If you are looking for a safe seal for your liquid and dry products with out the need for Heat Induction Sealers or any equipment, this is your perfect choice. Give it a try today and you will be completely sealed and protected! And did I mention, very satisfied as well.