Frequently Asked Questions about Fluoropolymers

Our FAQ's page is updated periodically for new questions and issues - please visit this page for information or answers that might be of interest to you.

General FAQs

What is the difference between the different fluoropolymer materials?

In addition to PTFE, FEP and PFA tubing there are other fluoropolymers such as THV, ETFE, ECTFE, CTFE, and PVDF tubing. Although these materials are members of the same family, they have slightly different thermal and mechanical properties. PTFE and PFA tubing have a slightly higher upper use temperature than FEP tubing. FEP and PFA are clear (PTFE is translucent), and have better mechanical properties than PTFE. The other key differences are in the areas of chemical inertness, corrosion resistance, permeability, and FDA approval. Please see the Detailed Properties section by clicking on the Technical Data bar on the home page.

Do these fluoropolymer materials perform differently?

These materials, although members of the same family, have slightly different thermal and mechanical properties. PTFE and PFA have a slightly higher upper use temperature than FEP. FEP and PFA are clear (PTFE is translucent), and are an improvement from PTFE properties. For a detailed listing of the properties of these resins, please click on the Technical Data bar on the home page.

The other key differences are in the areas of chemical inertness, corrosion resistance, permeability, and FDA approval. Please see the Detailed Properties section by clicking on the Technical Data bar on the home page.

Tubing FAQs

What tubing materials are available from Fluorotherm?

At present, we produce PTFE, FEP, PFA, PVDF, and ETFE tubing.

What is the pressure rating on a specific size of tubing?

The pressure rating is a calculated value, using basic mechanical engineering formulas and the tensile or hoop strength. The pressure rating is dependent upon temperature of use. As with any tubing, the pressure rating falls with rising temperature. The smaller the tube size, the higher the pressure capability.