High-temperature Sealing Material Competition: PEEK VS. PTFE

When it comes to high temperature sealing materials, comparisons are often made to competitors. For example, PEEK (polyether ether ketone) and PTFE (Polytetrafluoroethylene) are both the most commonly used high temperature sealing materials. Each material has its unique strengths and weaknesses, but what are the differences between these two materials when it comes to high-temperature applications? Next, this article will provide a detailed comparison of these two materials in the following three areas.

Temperature Resistance

Whilst both PTFE and PEEK have excellent heat resistance, they have slightly different temperature ranges.PEEK operates well at temperatures up to 260°C, making it suitable for a wide range of high temperature applications. PTFE polytetrafluoroethylene, on the other hand, while also able to withstand high temperatures, loses some of its mechanical properties at temperatures as high as 210°C. This means that PTFE may not last as long as PEEK in high temperature environments.

Chemical Resistance

Both PEEK and PTFE have excellent chemical resistance, making them ideal for use in chemically aggressive environments. However, PEEK is not as chemically resistant as PTFE, which means that in certain highly corrosive environments, PTFE may be more suitable as a sealing material. Although PEEK is slightly less chemically resistant than PTFE, it still has excellent chemical resistance.

Mechanical properties

PEEK has excellent mechanical properties, and its mechanical properties, including tensile strength and wear resistance, are superior to those of PTFE. compared to PTFE, PEEK has superior mechanical properties. This means that PEEK is ideally suited to applications requiring thermal stability and mechanical strength.

In summary, PEEK and PTFE are both excellent high temperature sealing materials, but there are some differences in their use. Understanding these differences can help you choose the most appropriate material for your high temperature sealing application. Please make an informed choice based on the actual application scenario combined with the above.