by Jackie Johnson Jackie Johnson No Comments

Spring Energized PTFE Seal

Polytetrafluoroethylene (PTFE) is a chemically resilient fluoroplastic. An incredibly versatile material, PTFE is used (at least in some capacity) in nearly every industry imaginable. PTFE has its limitations, however.

Modified PTFE (or MPTFE) pushes the limits of regular PTFE, offering exciting new possibilities for a wide variety of applications. The reason behind such improvements? MPTFE, also known as TFM (trade name of Daikin) is a copolymer of tetrafluoroethylene and a small quantity of a perfluorinated modifier (perfluoropropyl vinyl ether, PPVE).

In other words, MTFM has added chemicals that make it stronger and more versatile than regular PTFE. And because of its strength and versatility, modified PTFE is used in a wide variety of industries. These include, but are not limited to, automotive, aerospace, medical device, LNG and more.

A Strong and Versatile Material

Modified PTFE has several advantages over regular PTFE. It has a substantially reduced deformation under load- 4% for Modified PTFE vs 10% for PTFE. This, as well as improved flexibility, makes modified PTFE great for devices that need a little give but won’t break under pressure.

MPTFE also has a lower porosity and permeability which helps reduce the amount of liquid absorption, making it perfect for products such as seals for wet environments. On top of that, modified PTFE has smoother surfaces, nonstick and dielectric properties, and a reduced cold flow. It has good metering properties, good electrical and mechanical properties. And with excellent fuel and additive resistance, MPTFE can replace conventional materials such as PTFE and make it easier to use more aggressive lubricants and seal designs.

In Conclusion

As you can see, MPTFE is an incredibly versatile and strong material to use. It can withstand more abuse than the average PTFE, giving it a clear advantage for a variety of applications. Use modified PTFE for your next project and let Advanced EMC Technologies help you create products that take full advantage of this wonderful material.

Contact us today to learn more!

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