what is lubricants

A lubricant, or lube, is a substance that helps to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. Lubricants can be in liquid, semi-solid, solid, or gaseous form, and they can be made of various substances such as oil, grease, graphite, molybdenum disulphide, polytetrafluroethylene, water, and air. In addition to reducing friction, lubricants can also perform other functions such as heat regulation, power transmission, sealing against dust or dirt, as well as reducing oxidation and preventing corrosion. Lubricants have been used for thousands of years, and they are widely used in various industries including automotive, aerospace, construction, chemical, or textile industries to ensure the smooth functioning of their machinery and equipment. Lubricants are also used for many other purposes such as cooking, bioapplications on humans, ultrasound examination, medical examination, and sexual intercourse.