Aircraft hydraulic system XNBR seals

An introduction to the contents of the aircraft hydraulic system XNBR seals

XNBR material properties

XNBR, or carboxylated nitrile rubber, is a special rubber material made of butadiene, acrylonitrile and organic acids (such as acrylic acid, methacrylic acid, etc.) ternary copolymerization. Its relative density is about 0.98~0.99, and the polarity of the polymer is increased after the introduction of the carboxyl group, thus endowing XNBR with high strength, good adhesion and aging resistance. In addition, XNBR has excellent oil, abrasion and tear resistance, as well as high tensile strength and elongation at break. These characteristics make XNBR have a wide range of applications in aircraft hydraulic systems.

Preparation process of aircraft hydraulic system XNBR seals

The preparation process of aircraft hydraulic system XNBR seals mainly includes raw material preparation, mixing, molding, vulcanization and other steps. First of all, the raw materials such as butadiene, acrylonitrile and organic acids are mixed evenly according to a certain proportion, and then an appropriate amount of fillers, additives and crosslinkers are added, and they are fully mixed through the mixer.

Next, the compounded compound is put into a mold to form the initial shape of the seal. Finally, the formed seal is put into a vulcanization tank for vulcanization to make it have stable physical and chemical properties. After this series of process treatment, XNBR seals have excellent sealing performance and durability, which can meet the needs of long-term stable operation of aircraft hydraulic systems.

Advantages of aircraft hydraulic system XNBR seals

Excellent sealing performance

XNBR seals have good elasticity and compressibility, and are able to fit snugly to the sealing surface, forming an effective sealing barrier. At the same time, its unique material characteristics make XNBR seals maintain good sealing performance under harsh working conditions such as high pressure, high temperature and high speed.

Good oil resistance and corrosion resistance

Hydraulic fluids used in aircraft hydraulic systems often contain a variety of additives and corrosive media, which are prone to corrosion and damage to seals. XNBR seals, on the other hand, have excellent oil and corrosion resistance, allowing them to maintain stable performance over long periods of exposure to hydraulic fluid.

High abrasion resistance and tear strength

Seals in aircraft hydraulics are subject to frequent friction and impact and therefore require high wear resistance and tear strength. XNBR seals have excellent wear resistance and tear strength, and can operate stably for a long time in harsh working environments.

Good adaptability and machinability

XNBR seals have good adaptability and machinability, and can be customized according to different sealing needs to meet the various sealing requirements of aircraft hydraulic systems.

Maintenance of aircraft hydraulic system XNBR seals

In order to ensure the long-term stable operation of the XNBR seals in the aircraft’s hydraulic system, regular maintenance is required. Specific measures include:

Regularly check the sealing performance of the seals, and replace them in time if leakage or damage is found.

Regularly clean and lubricate the seals to keep their surfaces clean and lubricated.

Avoid scratching or damaging the seal with sharp tools or objects.

When replacing the seal, select an XNBR seal that matches the original model and install it according to the correct installation method.

Conclusion

Aircraft hydraulic system XNBR seals play an important role in ensuring the safe and efficient operation of aircraft due to their excellent sealing performance, oil resistance, wear resistance and tear strength. By understanding its material properties, preparation process, application advantages and maintenance knowledge, we can better understand and use XNBR seals, which provides a strong guarantee for the stable operation of aircraft hydraulic systems.

Here are some possible questions and answers about the FAQ (Frequently Asked Questions) about aircraft hydraulic system XNBR seals (which may refer to a specific rubber or sealing material, such as nitrile rubber):

Q1: What role do XNBR seals play in aircraft hydraulics?

A1: XNBR seals play a key role in preventing fluid leakage in aircraft hydraulics. They are commonly used to seal pipes, fittings, valves, and other hydraulic components to ensure the stable operation and efficiency of hydraulic systems.

Q2: What are the properties of XNBR material that make it an ideal choice for hydraulic system seals?

A2: XNBR materials generally have good oil resistance, abrasion resistance, high temperature resistance and chemical resistance. These features allow XNBR seals to remain effectively sealed for long periods of time in harsh aircraft hydraulic system environments.

Q3: How can I tell if an aircraft hydraulic system XNBR seals needs to be replaced?

A3: If there is a leak in the aircraft’s hydraulic system, the seal is deformed, hardened, or damaged, etc., the XNBR seal may need to be replaced. In addition, regular maintenance and inspections can help identify potential problems and replace seals in advance.

Q4: What do I need to pay attention to when replacing aircraft hydraulic system XNBR seals?

A4: When replacing XNBR seals, make sure to choose the appropriate size and model and install them according to the manufacturer’s recommendations. At the same time, it is important to clean and inspect the sealing surface to ensure that the new seal is properly installed and sealed effectively.

Q5: How does the aging of XNBR seals affect the hydraulic system?

A5: The aging of XNBR seals may cause them to lose their elasticity and sealing properties, which can lead to leakage in the hydraulic system. Leaks not only affect the normal operation of the system, but can also pose a threat to aircraft safety. Therefore, it is very important to regularly inspect and replace aging seals.

Q6: How can I extend the service life of aircraft hydraulic system XNBR seals?

A6: Ways to extend the life of your XNBR seals include: selecting high-quality seals, ensuring proper installation and tightening, keeping the hydraulic system clean, and replacing aging seals regularly. In addition, avoiding excessive temperatures and pressures can also help extend the life of the seals.

Q7: What are the advantages of XNBR seals compared to seals made of other materials?

A7: XNBR seals generally have better oil and wear resistance compared to other materials. This allows them to perform well in aircraft hydraulics and maintain an effective seal for long periods of time in harsh operating environments. In addition, XNBR seals also have good high temperature resistance, which can maintain stable performance under high temperature conditions.

Please note that the above answers are based on general information and assumptions. In practice, specific guidelines and recommendations from aircraft manufacturers and seal suppliers should be consulted.

Tips: Please provide drawings for customized products, we can complete the samples within 4-8 working days.