Food-contact and potable-water certified PPSU for food and drinking water equipment.
Food Grade PPSU is a Food Grade grade within PSU / PPSU (Polysulfone), widely used in industrial CNC machining due to its balanced mechanical, thermal, and machinability performance.
PPSU grades with food contact and drinking water certification, suitable for food and drinking water equipment.
Food Grade PPSU grades are commonly used in the following fields and scenarios; our CNC machining services can provide custom parts for these industries.
Food Grade PPSU demonstrates the following core advantages in CNC machining and end-use applications.
The following are key process points when machining PSU / PPSU (Polysulfone) material, to ensure part quality and machining efficiency.
PSU is highly hygroscopic; dry at 135°C for 3–4 hours before machining to prevent silver streaks and bubbles from hydrolysis.
Use sharp carbide tools and maintain continuous cutting to avoid localized overheating at entry and exit points.
Perform post-machining stress-relief annealing to eliminate residual stresses and prevent environmental stress cracking during use.
Avoid contact with ketones, esters, and halogenated hydrocarbon solvents; polishing yields a uniform high-gloss surface.
Besides Food Grade PPSU, PSU / PPSU (Polysulfone) offers several other grades with different characteristics. Click to view details.
Send your STEP / DWG / PDF drawing and get a detailed quote with free DFM analysis and process recommendations within 2 hours. No minimum order — from 1 piece.
