Aircraft Hydraulic System Seals

Aircraft Hydraulic System Seals are components that play a key role in aircraft hydraulics. They are designed to seal and hold high-pressure liquids in hydraulic systems and ensure system reliability and safety.

The function of seals for aircraft hydraulic systems

Sealing performance

The main function of aircraft hydraulic system seals is to ensure the sealing performance of the hydraulic system. They are used to close various connection joints, valves and actuators in hydraulic systems to prevent liquid leakage and gas from entering the system to maintain the working pressure and stability of the system.

High pressure resistance

Aircraft hydraulic systems operate in high-pressure environments, and seals need to be able to withstand high pressures. They must be able to withstand the force of high-pressure liquids and maintain sealing performance to prevent liquid leakage and system failure.

Abrasion resistant

Seals also need to have good wear resistance. In hydraulic systems, seals are in constant friction contact with components such as pistons, cylinders and valves, so wear resistance is required to ensure long-term reliable service life.

The structure of the seals of the aircraft hydraulic system

Aircraft hydraulic system seals typically consist of elastomeric materials and fillers. Elastomeric materials are usually made of rubber or polyurethane, etc., which have good elasticity and sealing properties. Packing is used to enhance the high pressure and wear resistance of seals, and common packing materials include glass fiber, carbon fiber and metal particles. The structural design of the seal can be adjusted to the specific application needs to achieve optimal sealing performance and durability.

Material selection for aircraft hydraulic system seals

Material selection for aircraft hydraulic system seals is critical to its performance. Commonly used materials include the following:

Fluoroelastomer (FKM)

Fluoroelastomer has excellent resistance to oil, high temperature and chemical corrosion, and is a material commonly used in aircraft hydraulic system seals.

Nitrile rubber (NBR)

Nitrile rubber has good oil and wear resistance and is suitable for seals in some low-pressure hydraulic systems.

Polytetrafluoroethylene (PTFE)

PTFE is a very low-friction material with excellent chemical and high temperature resistance, and is commonly used in seals for some high-pressure hydraulic systems.

Polyurethane (PU)

Polyurethane has good elasticity and wear resistance, and is suitable for seals in some high-pressure hydraulic systems.

The importance of seals for aircraft hydraulic systems

Aircraft hydraulic system seals play an important role in the aviation industry. They are a key component in ensuring the proper functioning of aircraft hydraulics. Here are a few aspects of its importance:

Security

The reliability of aircraft hydraulic system seals is directly related to the safety of aircraft. Good sealing performance can keep the working pressure of the system stable, prevent liquid leakage and system failure, so as to ensure the normal operation and safe flight of the aircraft.

Efficiency and performance

High-quality seals reduce fluid leakage and ensure the efficient operation of the hydraulic system. By reducing fluid leakage, the aircraft’s hydraulic systems work more efficiently, providing a faster and more precise operational response, improving the aircraft’s performance and handling efficiency.

Cost savings

Good seals can reduce fluid leakage and system failure, reducing the frequency of repairs and replacement of parts. This can significantly reduce maintenance costs for airlines and increase aircraft availability and economic efficiency.

Environmentally friendly

Reducing liquid leakage not only saves costs, but also helps reduce environmental pollution. The good performance of hydraulic system seals can reduce the possibility of liquid leakage into the environment, protecting natural resources and ecological environment.