Delrin / POM (Acetal)
⬡ Chemical Resistant
100
°C
Max Service
Overview
Delrin (POM — polyoxymethylene acetal) — a precision engineering plastic. Self-lubricating, dimensionally stable, excellent for gears and bushings. Machines to tight tolerances. Slightly toxic fumes — ventilate.
Properties
Difficulty
intermediate
Flexibility
rigid
Enclosure
no
Dry Storage
no
Pros
- Self-lubricating — excellent for gears and bearings
- Dimensionally stable — tight tolerances achievable
- Excellent wear resistance
- Machines very cleanly
Cons
- Formaldehyde fumes when cutting — ventilate
- Cannot be glued easily
- More expensive than HDPE
Best For
- Gears
- cams
- bushings
- sliding components\nPrecision mechanical parts\nBearings and wear surfaces
Avoid For
- Applications needing adhesive assembly\nFood contact
Storage
No special requirements. Keep away from strong acids.
Brands
DuPont DelrinMcMaster-CarrGeneric POM sheet