FKM (fluoroelastomer) seals in aircraft hydraulic systems
FKM (fluoroelastomer) seals in aircraft hydraulic systems are widely used due to their excellent performance.
what is FKM (fluoroelastomer) seals in aircraft hydraulic systems?
FKM (fluororubber) seals are a type of sealing component used in aircraft hydraulic systems.
In aircraft hydraulic systems, these seals play a vital role in preventing leaks and ensuring the proper functioning of the system. They are designed to withstand the high pressures and harsh operating conditions within hydraulic systems.
The unique properties of FKM seals make them suitable for use in aircraft applications. They maintain sealing performance even in extreme temperatures, which is critical for safe and reliable operation of aircraft. In addition, their resistance to chemicals and oils helps prevent seal degradation and ensures their service life.
Detailed performance
- Chemical Resistance: FKM seals have excellent chemical resistance and are resistant to a wide range of chemicals, including ethers, amines, ketones, oxidants, organic solvents, fuels, acids and alkalis.
- Heat resistance: FKM seals can work stably in high temperature environments. Generally, the long-term use temperature range of FKM is -15°F to 400°F (-26°C to 204°C), while some special types of FKM ( Such as FFKM) can even withstand higher temperatures.
- Oil resistance: FKM has good resistance to oil and is suitable for use in oily media such as hydraulic oil.
- Aging resistance: FKM material has good aging resistance and can resist the effects of ozone, ultraviolet rays and heat.
- Low temperature performance: Although FKM's low temperature resistance is average, through specific formula improvements, it can maintain good elasticity and performance at lower temperatures.
Product description
FKM seals in aircraft hydraulic systems usually include O-rings, lip seals, U-cups, etc. They are key components of the system and are used to prevent hydraulic oil leakage and ensure the normal operation of the system. These seals improve aircraft safety and reliability by maintaining sealing performance in harsh operating environments.
Product instructions
- Installation: Before installing the FKM seal, make sure that the seal groove and the seal itself are clean and free of oil and dirt.
- Lubrication: Using the proper lubricant can aid installation and reduce seal wear.
- Pressure: Make sure system pressure is within the rating of the FKM seal.
- Temperature: Avoid exceeding the maximum allowable operating temperature of FKM seals.
| Characteristics ■ Colour: Black ■ Temp. resistance low: -20 °C ■ Temp. resistance high: 200 °C ■ Hardness tolerance: -5/+5 |
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| Physical Properties Refers | ||
| Property | Value | Unit |
| Hardness Shore A-Slab | 70.0 | |
| Hardness -Test standard | ASTM D2240 | |
| Elongation at break | 215 | % |
| Elongation at break -Test standard | ASTM D412 | |
| Tensile strength | 15.50 | MPa |
| Tensile strength-Test standard | ASTM D412 | |
| 100%Modulus | 6.70 | MPa |
| 100%Modulus -Test standard | ASTM D412 | |
Please note that the performance of FKM seals may vary depending on different manufacturing processes and added fillers, so selection and use will need to determine the most appropriate materials and specifications based on specific application needs and environmental conditions.
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