Describe: 100% new and high quality Material: Foam Color: see picture Specifications: 20mm, 23mm, 25mm, 28mm, 32mm, 38mm, 40mm, 51mm, 55mm, 63mm, 70mm, 82mm Package Includes:200Pcs/set Pressure Sensitive Seal Cap Suitable for pressure sensitive foam seals, cap seals. Made of foam material, soft, non-toxic, odorless, good sealing performance. It can not only increase the output value of the enterprise, but also extend the storage function of the product. It is widely used in the sealed packaging of medicine, food, health products, cosmetics and some chemical products. advantage: 1. Help maintain the freshness of the product. 2. Help prevent oil and fluid leakage. 3. Helps prevent product contamination. 4. Help verify product integrity. How to Use: Place the liner onto the opening of the bottle/jar. (Make sure the rim is dry, clean and smooth. ) The one side with word should be the upper side (see picture shown). Twist your cap onto the bottle. Leave in place for 30 minutes. This gives the adhesive time to release leaving the liner attached to the rim. You will see the liner sealed closely onto the rim of the bottle/jar opening after you take off the outside cap 30 mins later. Note: 1. Please allow 5-10mm differences due to manual measurement, thanks. 2. The actual color of the product may be slightly different from the picture, and the website is caused by various factors such as the brightness of the monitor and the brightness of the light.