FEP tube shares similar properties with PTFE, mainly, low friction and non-reactivity.
FEP is, slightly, softer than PTFE and has a melting point of 260C. It is, also, highly transparent, making it perfect for a multi-filament setup.
Sold by the meter.
Lengths over 5 meters will be cut at the 5 meter point. This shit is a bitch to cut. Next round, I'll order some pre-cut, to avoid this limitation.