PCTFE, formerly called by its original trade name, KEL-F®, has higher tensile strength and lower deformation under load than other fluoropolymers.  It has a lower glass transition temperature than other fluoropolymers.  Like most or all other fluoropolymers it is inflammable.  PCTFE really shines in cryogenic temperatures, as it retains its flexibility down to -200°F (-129®C) or more.  It does not absorb visible light but is susceptible to degradation caused by exposure to radiation.  PCTFE is resistant to oxidation and has a relatively low melting point.  Like other fluoropolymers, it is frequently used in applications that require zero water absorption and good chemical resistance.