3DXTech ThermaXPSU PelletsHigh-Temp, Steam-Sterilizable Engineering Polymer — Make Your Own Filament or Pellet-Print in Bulk
High-temperature, hydrolytically stable, and steam-sterilizable.
ThermaX™ PSU (Polysulfone) is a transparent-amber high-performance polymer with excellent heat resistance and outstanding hydrolytic stability — it withstands repeated steam autoclaving. It requires very high extrusion temperatures, well suited to bulk pellets on high-temp equipment. Made in the USA. Full specifications →
Made in the USA — ships from Rev1. Need a specific color, larger volume, or another pellet resin? Call (248) 707-2950.
USA-made PSU resin, in economical bulk pellet form.
3DXTech compounds ThermaX™ PSU in Grand Rapids, Michigan. Rev1 Technologies is your authorized 3DXTech reseller and US support partner in Auburn Hills, Michigan — ask us for the current data sheet.
Make your own filament — or feed a pellet printer — with genuine 3DXTech PSU.
ThermaX™ PSU (Polysulfone) is a transparent-amber high-performance polymer with excellent heat resistance and outstanding hydrolytic stability — it withstands repeated steam autoclaving. It requires very high extrusion temperatures, well suited to bulk pellets on high-temp equipment.
From pellets to spooled filament — on your own extruder.
Full control of your material supply, at bulk pricing.
A home filament extruder turns these pellets into 1.75 or 2.85 mm PSU filament at a fraction of spooled-filament cost — ideal for high-volume printing, custom colors, or research. Pre-dry the resin, dial in your extruder, and you have a steady supply of genuine 3DXTech PSU. Prefer to skip the spool? Feed the pellets directly into a pellet-fed printer.
High-temperature, hydrolytically stable, and steam-sterilizable.
Full mechanical data for ThermaX™ PSU is available from Rev1 on request.
Sustained high service temperatures for demanding parts.
Withstands repeated steam sterilization cycles.
Resists hot water and steam without degrading.
High strength and stiffness at elevated temperatures.
Needs 340–360 °C extrusion — for high-temp extruders only.
Extrude your own PSU filament or feed a high-temp pellet printer.
Pre-dry, then extrude — simple bulk processing.
3DXTech's guidance for turning PSU pellets into filament or feeding a pellet printer.
Dry the resin before extrusion. A dedicated dryer or toaster oven works — not the kitchen oven.
3DXTech's recommended melt range for extruding these pellets.
Wet resin extrudes with bubbles in the filament — if you see them, dry the pellets longer.
Produce 1.75 or 2.85 mm filament with a desktop filament extruder.
Feed straight into a pellet-fed 3D printer for large-format or high-throughput work.
PSU parts — at bulk volume.
Running from pellets makes high-volume production and large-format pellet printing far more economical than spooled filament.
When do pellets make sense?
These pellets are the same ThermaX™ PSU resin as spooled PSU filament. Choose pellets for the lowest cost per kg, pellet-fed printing, or custom filament extrusion; choose spooled filament when you want to load and print with no extra equipment. Request the full data sheet for exact mechanical figures.
| PSU Pellets | Spooled PSU Filament | |
|---|---|---|
| Cost per kg | Lowest | Higher |
| Ready to print | Needs extruder / pellet printer | Load and go |
| Best volume | High / bulk | Low–medium |
| Custom filament (color / diameter) | Yes | No |
| Format | 10 kg / 25 kg pails | 1 kg spools |
Same ThermaX™ PSU resin in both formats; request the data sheet for exact properties. Prices vary by pail size and date.
3DXTech ThermaX™ PSU Pellets — Product & Processing Data
Product and processing data below. Full mechanical data for the PSU resin is available —
RESOURCES
Data Sheet & Processing Support
Everything you need to run ThermaX™ PSU pellets.
WHY REV1 TECH
Authorized 3DXTech Reseller. Engineering-Materials Specialists.
Rev1 Technologies is an authorized 3DXTech reseller in Auburn Hills, MI, supplying genuine USA-made material with real support.
We help you pick the right resin and format, dial in extrusion, and keep production running.
FAQ
3DXTech PSU Pellets — Common Questions
What are PSU pellets for?
Making your own PSU filament on a home filament extruder, or feeding a pellet-fed 3D printer directly. They are also used for injection molding and materials research. Bulk pellets are the most economical way to run PSU at volume.
How do I process them?
Pre-dry at 150 °C for 4–6 hours, then extrude at 340–360 °C. Drying is essential — wet resin extrudes with bubbles in the filament.
Is this the same PSU as your spooled filament?
Yes — it is the same USA-made ThermaX™ PSU resin, just in bulk pellet form. The published property data applies to both.
What sizes are available?
10 kg / 25 kg pails, in natural. Ask us about colors and larger volumes.
Where can I get the mechanical data?
The full ThermaX™ PSU technical data sheet is available from Rev1 on request — use any “Request the TDS” button on this page.
Anything special about processing?
PSU is a high-temperature material — a hardened, all-metal hotend and 340–360 °C-capable extruder are required.