Lubricants are essential substances used to reduce friction and wear between moving surfaces. They come in various forms such as liquids, greases, oils, and solid films, and are employed in numerous industries including automotive, manufacturing, aerospace, and marine. The primary function of lubricants is to create a thin film between two surfaces, which prevents direct metal-to-metal contact, thereby reducing heat and minimizing wear and tear. Lubricants play a crucial role in extending the lifespan of machinery and equipment while also improving efficiency and performance.