The aluminum foil liners are suitable for containers of PET plastic material bottles jars or cans. It is widely used for sealing seasoning detergent toiletries hair care supplies and other powders solids liquids and oils. Advantage: 1. The cap seal liner is composed of aluminum foil and cardboard elastomer which can effectively avoid water dust moisture dirt and odors into the jar and prevent the bottle from leaking so that it can keep the products fresh at all times. 2. The aluminum foil sealing liner gives your products a professional look while providing a tamper-proof seal which allows your customers to use your products with confidence. Instruction: 1. Measure the inner diameter of the bottle cap. If there is a gasket in the bottle cap you can also measure the size of the gasket; 2. Put the sealing liner into the bottle cap exposing the side of the aluminum foil; 3. Then tighten the bottle mouth and seal it with the induction heat sealer. NOTE: 1. Please make sure the right size you need before ordering manual measurement allows 1 to 2 mm of error. 2. Avoid overfilling the container. 3. The induction heat sealer is not included.