Oil seals are mechanical devices used to prevent the leakage of lubricants, such as oil, from machinery. They are typically made of rubber or other flexible materials and are designed to fit snugly around rotating shafts. By creating a barrier, oil seals help maintain the proper lubrication of moving parts, which is essential for the efficient operation of machines. These seals are commonly found in various applications, including automobiles, industrial equipment, and household appliances. Proper installation and maintenance of oil seals are crucial, as worn or damaged seals can lead to oil leaks, resulting in reduced performance and potential damage to the machinery.