my $11 question is how PTFE in that size bends and flexes ("pretty tough" is one criteria) - if PTFE tubing will bend-flex and hold-recover its circular form - or - kink on itself like a cheap garden hose and become useless for chafingNever used PTFE for chafe guard but I am a plastics fabricator and I can tell you it is pretty tough. I agree with Gary questioning how flexible it is. It is a thermoplastic so you can heat it and bend it if that helps. Please let us now how it works for you.
i should be able to determine that once i get the product in hand and give it a few sharp bends ... if it kinks and discolors from the stress that would rule it it out in a few seconds