The PL58N is a Natural-colored HDPE plastic tear-tab lid with gasket. This is a heavy-duty pail lid and is ideal for industrial, heavy-duty applications. When fastened to a pail, these filled pails can be stacked on top of each other to optimize storage space. This lid has a rubbery liner, called a gasket, that helps create a better seal. This lid has been equipped with a tear-tab tamper-evident mechanism. Once the lid has been initially fastened to the pail, it cannot be removed without removing the tear-tab. High density polyethylene (HDPE) is marked with the resin identification code of 2. HDPE has a high tensile strength, good resistance to chemicals, good impact resistance, highly rigid, and highly scratch resistant. Natural-colored plastic is not actually colored. This is the natural color of the plastic, which is a milky translucent color. This translucent color shows product level, or how full (or, if you're a pessimist, how empty) the container is.