Porous PTFE

Porous PolyTetraFluoroEthylene (pPTFE) is a very low-density PTFE material. It combines the uniqueness of PTFE properties with a porous structure. The degree of porosity and porous size can be adjusted as a function of your application needs.

Porous PTFE materials are usually used as venting and filter elements, but their jagged surface also makes PB12000 materials excellent optical diffusers.

PBY Material Codes:

PB12000W - Porous PTFE

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Porous PTFE Spec Summary

Property Test Method Units Typical Values
Color - - White
Specific Gravity ASTM D792 - Proprietary
Tensile Strength, min. ASTM D4894 PSI [MPa] Proprietary
Elongation at Break, min. ASTM D4894 % Proprietary
Service Temperature High - °F [°C] 500 [260]
Service Temperature Low - °F [°C] -436 [-260]
Second Melt Peak Temp. ASTM D3418 °F [°C] 615 [324]
Glass Transition Temp. ASTM D3418 °F [°C] -143 [-97]; 246 [119]

Material Available In:

Porous PTFE Rods

Porous PTFE Tubes

Porous PTFE Sheets

Porous PTFE Material

  • Symmetrical porous structure

  • Breathable, semipermeable

  • Hydrophobic

  • High temperature use

  • Minimal flex fatigue

  • Contaminants do not easily adhere to the surface

Typical Applications for
Porous PTFE Plastics

  • Gaseous and Liquid Filters

  • Diaphragms and Catalyst supports

  • Aerators for distributors and gas inlets

  • Venting elements for containers and batteries

  • Sensor protection elements

Porous PTFE Requirements


Porous PTFE Material
Data Sheet Downloads

PB12000W - Material Data Sheet


  • Wypych, George. Handbook of Polymers. 2nd Ed., ChemTec/Publishing, 2016.
  • Ebnesjjad, Sina. Fluoroplastics Vol1 & Vol2. 2nd Ed., Elsevier Inc., 2015.
  • Aerospace Materials Specifications for PTFE materials (AMS3678)
  • American Society for Testing and Materials (ASTM) Standards