Seals and Gaskets: Which Plastic Is Best?
When selecting a material for seals and gaskets, the question arises: Which plastic is actually best suited? We offer a wide range of plastics for different purposes. Here, we take a closer look at some common options and their specific advantages.
PTFE: Universal Chemical Resistance
PTFE is a popular choice thanks to its excellent chemical resistance. It works well in many different environments and temperatures. The material's unique molecular structure contributes to its exceptional properties. Is PTFE always the best choice? Sometimes, other materials might be better.
PEEK: High Temperature and High Pressure
For applications that require resistance to high temperatures and pressures, PEEK is often a superior option. With a melting point above 300 degrees Celsius, PEEK can withstand significantly higher heat than PTFE. Furthermore, it retains its chemical resistance even under tough conditions. PEEK is a hard material, which can make processing more difficult. There are solutions! One option is to combine PEEK with other materials, like PTFE, to take advantage of the benefits of both materials. But what happens if you must choose between PEEK and PTFE?
POM-C: Low Friction
POM-C is known for its low friction. It's often used in applications where minimal friction loss is important. The material is also relatively easy to process, making it a popular choice among manufacturers. POM-C has a lower chemical resistance, which is important to consider. Again, the combination with other materials, like PTFE, can be a good solution. But if you must choose between POM-C and PTFE, what should you choose?
UHMWPE: High Wear Resistance
UHMWPE is a material with very good wear resistance. It's suitable for applications where wear and abrasion are a problem. Just like POM-C, it's relatively easy to process. The material has limited chemical resistance.
Important Factors When Choosing a Material
When choosing a material for seals and gaskets, it's important to consider all aspects of the application. Chemical resistance, temperature, pressure, and wear resistance are important factors. Plastic offers unique advantages compared to rubber in some applications, especially when it comes to chemical resistance and temperature resistance. But there are also situations where rubber is a better option.
Design Considerations
When designing seals and gaskets, it's important to consider all relevant factors. Compression, chemical resistance, temperature, and pressure all play a role in the final result. We're happy to help you choose the right plastic material for your specific application. Contact us for advice and together we'll find the best solution.
Seals and Gaskets: Which Plastic Is Best?