Acetal (POM)
Acetal (POM), or polyacetal, is a highly crystalline thermoplastic with excellent mechanical strength, stiffness and good shock absorption. It stands out for its excellent dimensional stability, low coefficient of friction, low moisture absorption and outstanding machinability, ideal for precision parts. Available as virgin copolymer (POM-C) and homopolymer (POM-H), in white and black, for the mechanical, food, chemical and electrical industries.
| Commercial | Designation | Structure | Crystallinity |
|---|---|---|---|
| Acetal (POM) | POM-C / POM-H | Copolymer / Homopolymer | High |
| Component | Identification |
|---|---|
| Base polymer | Polyacetal (POM) |
| Main monomer | Formaldehyde |
| Repeating chemical unit | (CH₂O)ₙ / (–CH₂–O–)ₙ |
| Reference density | 1.41 g/cm³ |
| Structure | Copolymer (POM-C) and homopolymer (POM-H) |
| Water absorption | 0.2 % |
| Pigmentation | White and black (others on request) |
ExtrudedSemi-finished bars and sheets for cutting and machining
Round bars1/4" – 12"6.35 mm – 305 mm
Plates1/4" – 4¾"6 mm – 121 mm- Gears, pinions and cams
- Bearings, sleeves and rolling bearings
- Tight-tolerance machined parts
- Spindles and worm screws
- Springs, clips and fasteners
- Valve bodies
- Pump impellers
- Nozzles and sprayers
- Components in contact with water
- Guides and rollers
- Conveyor components
- Electrical insulators
- Precision structural parts
- Linear bearings
- Food industry components
- Mechanical wear parts
Note: Available as virgin copolymer (POM-C) and homopolymer (POM-H), in white and black; other colors on request. Values are for reference and may vary by grade. In engineering plastics, composition is identified by the base polymer, the process and its modifications, not by chemical percentages as with steels. The information and values in this data sheet are provided for reference only and may vary depending on manufacturing and application conditions. They do not constitute guaranteed specifications, so use and interpretation of this data is the user's responsibility.
