Metal seals are devices used to create a tight, leak-proof barrier between two surfaces. They are commonly made from materials like stainless steel or aluminum and are designed to withstand high pressures and temperatures. Metal seals are often used in industries such as aerospace, automotive, and oil and gas to ensure the integrity of systems that contain gases or liquids. These seals can come in various shapes and sizes, including O-rings, gaskets, and clamps. Their effectiveness depends on the design and the materials used, which help prevent contamination and maintain safety in critical applications. Proper installation and maintenance are essential for optimal performance.