FFPM vs. PTFE

Attribute	FFPM	PTFE
Chemical Name	Fluorinated Fluorocarbon Polymer	Polytetrafluoroethylene
Common Name	FFPM	PTFE
Temperature Resistance	Up to 260°C	Up to 260°C
Non-stick Properties	Yes	Yes
Chemical Resistance	Excellent	Excellent

Introduction

FFPM (Perfluoroelastomer) and PTFE (Polytetrafluoroethylene) are two popular materials used in various industries for their unique properties. While both materials are known for their excellent chemical resistance and high temperature capabilities, there are some key differences between the two that make them suitable for different applications.

Chemical Resistance

One of the most important attributes of both FFPM and PTFE is their exceptional chemical resistance. FFPM is known for its resistance to a wide range of chemicals, including acids, bases, and solvents. PTFE, on the other hand, is also highly resistant to chemicals, but it may not be as resistant to certain solvents as FFPM. This makes FFPM a preferred choice for applications where exposure to harsh chemicals is a concern.

Temperature Resistance

Both FFPM and PTFE can withstand high temperatures, making them suitable for use in extreme environments. FFPM has a higher temperature resistance compared to PTFE, with a continuous service temperature of up to 300°C. PTFE, on the other hand, has a lower continuous service temperature of around 260°C. This makes FFPM a better choice for applications that require exposure to higher temperatures.

Compression Set

Compression set refers to the ability of a material to retain its shape after being compressed. FFPM has a lower compression set compared to PTFE, meaning it can maintain its shape and sealing properties better under pressure. PTFE, on the other hand, may experience some deformation after being compressed, which can affect its sealing performance. This makes FFPM a preferred choice for applications where a tight seal is critical.

Flexibility

FFPM is known for its flexibility and elasticity, allowing it to conform to irregular shapes and surfaces. This makes it a versatile material for various sealing applications where flexibility is required. PTFE, on the other hand, is a rigid material that may not be as flexible as FFPM. While PTFE is still used in many sealing applications, FFPM is often preferred for its superior flexibility.

Abrasion Resistance

FFPM has excellent abrasion resistance, making it suitable for applications where the material may come into contact with abrasive substances. PTFE, on the other hand, may not have the same level of abrasion resistance as FFPM. This makes FFPM a preferred choice for applications where wear and tear are a concern, such as in mechanical seals and gaskets.

Conclusion

In conclusion, both FFPM and PTFE have their own unique attributes that make them suitable for different applications. While FFPM is known for its superior chemical resistance, temperature resistance, compression set, flexibility, and abrasion resistance, PTFE also offers excellent chemical resistance and temperature capabilities. The choice between FFPM and PTFE ultimately depends on the specific requirements of the application and the properties that are most important for the desired performance.