Amazon.com: AquaSys® 180 Filament 1.75mm 500g for 3D Printing, Highly Water-Soluble Support Material, Withstands High Chamber Temperatures to 180°C/356°F, Compatible with PEEK, PEKK, PEI, and PPSU : Industrial & Scientific
ThermaX™ PPSU (Polyphenylsulfone) - Radel & Ultrason P, 3D Printing Filament from 3DXTech - YouTube