The L823T is a natural-colored (translucent) smooth lid made from polypropylene (PP). The natural color allows the product to be seen through the lid. This lid fits containers with an 89-400 neck finish and includes a pressure sensitive liner (PS liner). This liner will adhere itself to the container creating a tamper-evident seal when the lid is securely screwed on. When the lid is removed, the liner will remain and will need to be peeled back before accessing the product. Please read 5 seals and how they make perfect liners for your container for more information on liner types.