Rubber seals vs. metal seals: Comparing performance in aerospace

In the field of aerospace, the selection of seals is crucial, and rubber seals and metal seals are two common sealing materials. Below, Delong Seals will compare their performance in the field of aerospace.

1. Rubber seals

Rubber seals are usually made of materials such as nitrile rubber (NBR) and fluororubber (FKM), and have the following advantages:

Good sealing performance: Rubber seals have good elasticity and softness, and can effectively fill the gaps on the sealing surface to ensure sealing performance.

High temperature resistance: Fluororubber seals have excellent high temperature resistance and can maintain the sealing performance unaffected in high temperature environments.

Corrosion resistance: Rubber seals have good corrosion resistance to some common liquids and chemicals and can adapt to complex working environments.

2. Metal seals

Metal seals are usually made of metal materials such as stainless steel and aluminum alloy, and have the following characteristics:

High pressure resistance: Metal seals can withstand higher pressures and maintain the sealing performance unaffected, and are suitable for sealing high-pressure systems.

Wear resistance: Metal seals have high surface hardness and good wear resistance, and are suitable for working conditions with long-term high-speed friction.

High stability: Metal seals have good stability and durability, and can operate stably for a long time in complex working environments.

Comparison and selection

In the field of aerospace, the selection of seals needs to be comprehensively considered according to the specific working environment and requirements. Rubber seals are suitable for scenes with high requirements for sealing performance and not too high temperatures, while metal seals are suitable for scenes with high requirements for pressure and wear resistance. In practical applications, rubber seals, metal seals or a combination of them are usually used according to specific circumstances to ensure the reliable operation and safety of the system.

In summary, rubber seals and metal seals have their own advantages and applicable scenarios in the field of aerospace. Choosing the right seal can ensure the safety and reliability of aircraft and spacecraft.

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