In summary, oil seals are indispensable components in various mechanical systems, fulfilling multiple roles that enhance performance, durability, and reliability. By preventing leaks, keeping contaminants out, and maintaining essential pressure levels, oil seals ensure the efficient functioning of machinery across multiple industries. Regular maintenance and inspection of these seals are essential for optimal machine performance, highlighting their significance in engineering and operations management. Understanding the function of oil seals thus not only aids in effective maintenance strategies but also emphasizes their role in modern mechanical design.