FFKM vs. VITON

Attribute	FFKM	VITON
Chemical Resistance	Excellent	Good
Temperature Resistance	High	High
Compression Set	Low	Low
Cost	Higher	Lower

Introduction

When it comes to choosing the right material for sealing applications, FFKM and VITON are two popular options that are often considered. Both materials have their own unique attributes and advantages, making them suitable for different types of environments and conditions. In this article, we will compare the attributes of FFKM and VITON to help you make an informed decision when selecting a sealing material.

Chemical Resistance

One of the key factors to consider when choosing a sealing material is its chemical resistance. FFKM, also known as perfluoroelastomer, is known for its exceptional resistance to a wide range of chemicals, including acids, bases, solvents, and fuels. This makes FFKM an ideal choice for applications where exposure to harsh chemicals is a concern. On the other hand, VITON, a type of fluoroelastomer, also offers good chemical resistance, but it may not be as resistant to certain chemicals as FFKM.

Temperature Resistance

Another important attribute to consider is the temperature resistance of the sealing material. FFKM is known for its excellent high-temperature resistance, with some grades capable of withstanding temperatures up to 327°C (620°F). This makes FFKM suitable for applications where extreme heat is a factor. VITON, on the other hand, also offers good temperature resistance, but it may not be able to withstand temperatures as high as FFKM. It is important to consider the operating temperature range of your application when choosing between FFKM and VITON.

Compression Set

Compression set refers to the ability of a material to maintain its shape and sealing properties after being compressed over time. FFKM is known for its low compression set, meaning it can maintain a tight seal even after repeated compression cycles. This makes FFKM a reliable choice for applications where sealing performance is critical. VITON, on the other hand, may have a higher compression set compared to FFKM, which could affect its long-term sealing performance in certain applications.

Cost

Cost is another factor to consider when choosing between FFKM and VITON. FFKM is typically more expensive than VITON due to its superior chemical resistance and high-temperature capabilities. While the initial cost of FFKM may be higher, its long-term performance and durability may justify the investment in certain applications. VITON, on the other hand, is a more cost-effective option for applications where extreme chemical resistance or high-temperature resistance is not required.

Applications

Both FFKM and VITON have a wide range of applications across various industries. FFKM is commonly used in industries such as chemical processing, semiconductor manufacturing, and aerospace, where exposure to harsh chemicals and high temperatures is common. VITON, on the other hand, is often used in automotive, oil and gas, and pharmaceutical industries, where moderate chemical resistance and temperature resistance are sufficient. It is important to consider the specific requirements of your application when choosing between FFKM and VITON.

Conclusion

In conclusion, FFKM and VITON are both excellent sealing materials with their own unique attributes and advantages. FFKM offers superior chemical resistance, high-temperature resistance, and low compression set, making it ideal for demanding applications. VITON, on the other hand, is a cost-effective option with good chemical resistance and temperature resistance for a wide range of applications. When choosing between FFKM and VITON, it is important to consider the specific requirements of your application to ensure optimal performance and reliability.