PFA, or Perfluoroalkoxy, is a type of fluoropolymer. It has very similar properties as the more common polytetrafluoroethylene (PTFE), which is the more popularly known form of Teflon.

PTFE seals and sealing solutions are used in the more traditional sealing markets like pneumatics and hydraulics as well as in aerospace, energy, oil and gas, the life sciences sector and in the field of renewable energies.

Temperatures above 77°C are not favorable for components of most elastomers and plastics, whereas PTFE withstands temperatures as high as 260°C.

PTFE's mechanical properties are low compared to other plastics, but its properties remain at a useful level over a wide temperature range of of -100°F to +400°F (-73°C to 204°C).