Rubber seals vs. metal seals: Comparing performance in aerospace

As two common sealing materials, rubber seals and metal seals have important applications in the aerospace field. They each have a series of characteristics and advantages. The following will compare their performance in the aerospace field.

Temperature resistance:

Rubber seals: Rubber seals usually have good elasticity and sealing performance at lower temperatures, but are prone to failure in high temperature environments.

Metal seals: Metal seals usually have excellent high temperature resistance and can maintain stable sealing performance under extreme temperature conditions.

Corrosion resistance:

Rubber seals: Rubber seals have poor corrosion resistance to some chemicals and are easily corroded by chemicals and fail.

Metal seals: Metal seals usually have good corrosion resistance, can resist the corrosion of various chemicals, and maintain long-term sealing performance.

Mechanical strength:

Rubber seals: Rubber seals are usually weak in mechanical strength and are easily damaged by mechanical pressure and stretching.

Metal seals: Metal seals have high mechanical strength and compressive resistance, and can withstand large mechanical pressure without deformation or damage.

Scope of application:

Rubber seals: Rubber seals are usually suitable for sealing occasions in some low-pressure, low-temperature, non-corrosive environments, such as some low-pressure liquid systems in aerospace.

Metal seals: Metal seals are suitable for sealing requirements in high-pressure, high-temperature, corrosive environments, such as rocket engines, liquid propulsion systems and other high-pressure and high-temperature systems in aerospace.

In summary, rubber seals and metal seals have their own advantages in the aerospace field. The selection of suitable seals depends on the specific application scenarios and needs. When choosing, it is necessary to comprehensively consider factors such as the sealing environment, working conditions, pressure and temperature to ensure the best sealing effect and safety performance.

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