Fabricate custom bottles, packaging, and other parts for chemical processing. Made of PPSU, these filaments won’t break down even after prolonged exposure to virtually any acid, base, or solvent. They also stand up to oil and fuel, so they’re sometimes made into automotive parts. Because they have a low density and won’t transfer electricity, they make parts that are lightweight and protect components from electric currents. These filaments are easy to store too, since they resist absorbing water. Rated UL 94 V-0, they meet flammability standards.

Print these filaments on a fused filament fabrication (FFF) 3D printer. Due to its high melting point, PPSU is more difficult to print than most other materials. You need an all-metal extruder and a heated printer bed to reach its minimum printing temperature. After printing, anneal your part in an oven for 2 to 4 hours to reach its maximum strength, temperature, and ability to resist chemicals.

Tensile strength is the best measure of a filament’s overall strength. Similar to the stress applied on a rope during a game of tug-of-war, it’s the amount of pulling force a material can handle before breaking. A higher rating means a stronger filament. A tensile strength of 5,000 psi and above is considered good; 12,000 psi and above is excellent.

Maximum exposure temperature is the point at which a printed part will begin to deform. Above this temperature, your part will start to lose structural integrity.