PVDF [Polyvinylidene fluoride] 3D printing filament offers exceptional thermal and chemical resistance - making for an ideal for industrial-grade printing material.  Rated for uses up to 150°C - this filament can be used in demanding applications and under some of the most extreme conditions.  PVDF is inherently flame retardant with a UL V0 rating based on it's chemical structure and requires no additional additives to achieve this flame rating.  

Print PEEK with Gearbox™ HT2 High-Temp 3D Printer.  Check it out HERE.