PPSU Filament
The toughest of the sulfones. PPSU (polyphenylsulfone) combines high heat resistance, exceptional impact toughness, and outstanding resistance to hot water, steam, and repeated sterilization — the sulfone of choice for medical, aerospace, and autoclave-cycle parts.
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What is PPSU filament?
PPSU (Polyphenylsulfone) is an amorphous high-performance thermoplastic in the sulfone family, and the toughest of the three (PSU, PES, PPSU). It offers high heat resistance, outstanding impact strength, inherent flame retardancy, and superb hydrolytic stability — meaning it shrugs off repeated steam sterilization and boiling water without cracking or losing strength.
That combination makes PPSU a staple for reusable medical devices, aerospace interiors, and plumbing/hot-fluid parts that must survive many autoclave cycles. As an amorphous polymer it warps less than semi-crystalline high-temp materials, but still needs a high-temperature printer, heated chamber, and thorough drying.
PPSU vs PSU vs PES — how to choose
Within the sulfone family, choose by toughness and sterilization demand:
When parts face many sterilization cycles or impact, PPSU is the sulfone to reach for.
Printing PPSU successfully
- High-temp printer — high-temperature hotend and heated chamber required.
- Dry thoroughly — sulfones are hygroscopic; moisture ruins strength and clarity.
- Heated chamber for low warp and strong interlayer bonding.
- Strong bed adhesion and slow, hot printing.
- Follow grade-specific profiles from the datasheet.
PPSU brands stocked at Rev1
Rev1 Technologies stocks PPSU filament from multiple brands, all shipped from Auburn Hills, Michigan with real phone support. PPSU is grade-specific — Use the brand filter below to narrow the range, or call (248) 707-2950 for spec, bulk, and color-match help.