Material: The seal cover is made of high-quality stainless steel, and the surface shows the unique luster of metal. Features: Silver gray, flat and smooth top, slightly sunken bottom, forming a shallow disk-like structure, probably to better fit the sealed object. Uses: Sealed caps are usually used on food packaging, chemical containers or other items that need to maintain a stable internal environment. This is a simple and practical metal seal cover, designed with a focus on practicality and durability. Date First Available February 18, 2025