FKM seals automotive three-way catalytic converter

FKM seals automotive three-way catalytic converter

Material properties

High temperature resistance: FKM seals are capable of operating in high temperature environments, often withstanding temperatures up to over 200°C. This makes it suitable for the high temperature environment generated by exhaust gas treatment in automobile three-way catalytic converters.
Chemical resistance: FKM has excellent chemical resistance and can resist the erosion of a variety of chemical substances, including acid gases, organic solvents and fuels. This allows it to work stably in the catalytic converter for a long time without losing its sealing performance due to corrosion by chemical substances.
Low gas permeability: FKM seals have low gas permeability, which can effectively prevent the leakage of exhaust gas and ensure the normal operation of the catalytic converter.

Application areas

Interface sealing: FKM seals are widely used for interface sealing between catalytic converters and exhaust pipes, intake pipes and other components to prevent exhaust gas leakage.
Leak protection: FKM seals play a role in leakage protection at the connection points, welds and exhaust gas flow paths inside the catalytic converter, ensuring the integrity of the exhaust gas treatment system.
Thermal expansion compensation: FKM seals can compensate for thermal expansion during high-temperature operation of the catalytic converter, reducing stress concentration and damage caused by thermal expansion and maintaining sealing performance.
FKM seals need to be designed and manufactured with specific catalyst structure and requirements in mind to ensure fit and sealing performance with other components. During the maintenance and replacement process of the three-way catalytic converter, ensuring the use of appropriate FKM seals can ensure the normal operation and emission control effect of the catalytic converter.

Material selection: Select high-quality FKM seal materials that meet the operating conditions and requirements of the catalytic converter. Ensure that the material has good high temperature resistance, chemical resistance and sealing performance to ensure the reliability and durability of the seal.

Surface preparation: Before installing the FKM seal, ensure that the interface surface is clean, flat and free of obvious damage. Remove any dirt, grease or old sealing material and make sure the surface is smooth to ensure the seal will fit snugly and provide an effective seal.

Installation tips: It is very important to install FKM seals correctly to ensure their sealing performance. Make sure the seal is evenly and securely seated at the joint and avoid excessive compression or distortion of the seal. Use appropriate tools and techniques to ensure the seal fits properly over the joint and follow the correct installation procedures according to the manufacturer’s recommendations.

Pressure test: After installing the FKM seal, perform a pressure test to verify the sealing performance of the interface. This can be done by using appropriate testing equipment and methods to check for gas or liquid leaks. Make sure the seal effectively prevents leakage under pressure.

Regular Inspections and Maintenance: The performance of seals changes over time, so regular inspections and maintenance are important. Regularly check the condition of the seals, such as checking for cracks, aging or deformation, and perform maintenance or replacement as necessary to ensure the reliability of sealing performance.

FKM seals are relatively resistant to chemicals in automotive catalysts, but there are still some media that may adversely affect them.

Strong oxidants: FKM seals may be intolerant to strong oxidants such as concentrated nitric acid, concentrated sulfuric acid and hydrogen peroxide. These oxidants may cause oxidation, dissolution or damage of FKM materials.

Strongly acidic media: Some strongly acidic media, such as concentrated hydrochloric acid, concentrated sulfuric acid and concentrated nitric acid, may corrode or dissolve FKM seals. This may result in reduced sealing performance or material rupture.

Certain organic solvents: Certain organic solvents, such as alcohols, ketones, and ether solvents, may have a dissolving or swelling effect on FKM seals. This can lead to reduced sealing performance or material deformation.

Certain strongly alkaline media: Certain strongly alkaline media, such as concentrated sodium hydroxide or concentrated potassium hydroxide solution, may corrode or dissolve FKM seals.

Customizable FKM seals for automotive catalytic converters

Optimal sealing performance: Customized FKM seals are manufactured precisely to the design and requirements of the catalytic converter. This means that the seal fits perfectly at the catalytic converter interface, providing an excellent seal. This helps prevent exhaust gas leaks and ensures the effectiveness and performance of the catalyst system.

Optimized material selection: Customized FKM seals allow the most appropriate material to be selected based on the operating conditions and requirements of the catalytic converter. This means the seals can be resistant to temperatures, chemicals and pressures to meet the challenges found in catalytic converter systems. By optimizing material selection, customized seals can provide longer service life and better durability.

Improve system efficiency: Customized FKM seals ensure efficient operation of the catalytic converter system. Optimized design and performance of seals can reduce energy losses and emissions leakage, improving catalyst efficiency and performance. This helps improve the vehicle’s combustion efficiency, reduce tailpipe emissions, and meet stricter emissions standards.

Reliability and durability: Customized FKM seals undergo rigorous testing and verification to ensure their reliability and durability in the catalytic converter system. This means that the seal maintains its performance and sealing effect under various operating conditions, extending the service life of the catalytic converter. Reliable seals reduce maintenance and replacement frequency, lower repair costs and increase vehicle reliability.

Overall, customizable FKM seals can provide optimal sealing performance, material selection and system efficiency for automotive catalytic converter systems. By providing optimized sealing solutions, customized seals can provide you with a more reliable, long-lasting and efficient catalyst system.