Aircraft oil seals

Introduction of aircraft oil seals

Aircraft oil seals are critical mechanical seals used to keep fluids in aircraft engines and other systems within normal operating limits. They play an important role in an aircraft’s engines, hydraulic systems and transmission systems, ensuring system reliability and performance. This article will describe the functions, types, manufacturing materials of aircraft oil seals, and their applications in the aircraft industry.

Function

The main function of aircraft oil seals is to prevent oil leakage and external impurities from entering the system. They prevent oil leakage into the engine’s external environment by creating a seal between the rotating shaft and the fixed parts. At the same time, they prevent air, moisture and other contaminants from entering the system. Oil seals also reduce friction and wear, improving system efficiency and longevity.

Type

There are many types of aircraft oil seals, including O-rings, rotary shaft seals, piston rings and sealing gaskets. O-rings are annular rubber seals commonly used for static and dynamic seals for a wide range of pressure and temperature conditions. Rotary shaft seals are used on rotating shafts with special structures and materials to prevent oil leakage.

Piston rings are used to seal between the piston and the cylinder block to ensure the sealing performance of the compression chamber and combustion chamber. Sealing gaskets are used to connect two mechanical components and provide a reliable seal in high temperature and pressure environments.

Materials for the manufacture of aircraft oil seals

Aircraft oil seals are often manufactured from high-performance materials to meet the demands of demanding working environments. Common materials include rubber, polyurethane, polytetrafluoroethylene (PTFE) and metal. The rubber material has good sealing properties and wear resistance, suitable for various temperature ranges.

Polyurethane materials have high abrasion and oil resistance, suitable for high pressure and high temperature environments. PTFE is a low-friction material with excellent chemical and thermal resistance for sealing high-speed rotating parts. Metal materials are commonly used for sealing in high temperature and pressure environments.

Application of aircraft oil seals

Aircraft oil seals are widely used in various systems of aircraft. In the engine, the oil seal is used to keep the engine oil within its normal operating temperature and pressure range, ensuring the lubrication and cooling effect of the engine. In hydraulic systems, oil seals are used to prevent hydraulic oil leakage and ensure that the system works properly.

In the drivetrain, oil seals are used to seal components such as bearings and gearboxes, reducing energy loss and mechanical wear. In addition, oil seals also play an important sealing role in components such as hydraulic cylinders, hatches and hatches of aircraft.

Conclusion

Aircraft oil seals are an indispensable and critical component of aircraft systems and play an important role in aircraft performance, reliability and safety. Their functions include preventing oil leakage and external impurities from entering the system, reducing friction and wear, and improving system efficiency and life. Common types of aircraft oil seals include O-rings, rotary shaft seals, piston rings, and sealing gaskets.

They are manufactured with high-performance materials such as rubber, polyurethane, PTFE and metal to suit a variety of harsh working environments. Aircraft oil seals are widely used in aircraft components such as engines, hydraulic systems and transmission systems to ensure the normal operation of the system. The reliability and performance of aircraft oil seals is critical to the safe operation of aircraft.