The hydrolysis champions — PSU and PPSU shrug off hot water, steam and repeated sterilization cycles that destroy other clear engineering plastics.
Get a quote on polysulfonePolysulfone (PSU) and polyphenylsulfone (PPSU) hold strength and clarity through thousands of steam cycles, making them the materials of record for medical sterilization cases (non-implant), plumbing manifolds, and food-service hot-water service. PPSU adds an impact and chemical-resistance step over PSU.
| Impact strength | PSU: moderate · PPSU: excellent |
|---|---|
| Heat (HDT) | ~170-205°C |
| Clarity | Transparent amber |
| Chemical resistance | Outstanding vs. hot water/steam |
| Relative cost | High |
Property ranges are general guidance and vary by grade and supplier; our team confirms the exact spec and certification for your application.
Related materials: PEEK / PEK · Polyetherimide (PEI) · Polyarylate · Fluoropolymers · all materials
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