POM – Polyoxymethylene

POM: Hostaform, Ultraform, Capital, Isoform, Tenac, Delrin

Typical applications

Precision mechanics and fine mechanisms

Due to its high rigidity and ability to maintain precise tolerances, POM is the first choice for small, precise moving parts.

• Gears and bearings: Small gears in watches, printers, household appliances and toys.
• Sliding elements: Guides, slide rails, bushings and bearing cages.
• Spring elements: Plastic springs and buckles (as POM has excellent elastic return).

Automotive industry

POM is used for components that must be resistant to fuels, oils and mechanical wear.

• Fuel systems: Fuel pump parts, tank floats and filter housings.
• Interior equipment: Window mechanisms, door handles, seat belts (buckles) and switches.
• External components: Windshield wiper mechanisms.

Plumbing and sanitary installations

Because POM is extremely resistant to hydrolysis (unlike PBT) and does not swell in water (unlike PA), it dominates in sanitary engineering.

• Valves and mixers: Cartridges in single-lever mixer taps, valve housings.
• Fittings: Pipe fittings, spacers and water pump impellers.
• Shower heads: Internal mechanisms and nozzles.

Consumer goods and sports equipment

• Textile industry: Durable zippers (zipper teeth), plastic buckles on backpacks (clip-clamp buckles).
• Sports: Ski bindings, parts of diving equipment, wheels for roller skates.
• Musical instruments: Guitar picks, certain parts of wind instruments and piano mechanisms.

Quick comparison: When to choose POM and when PA?