Sustarin® C Acetal

Sustarin® C Acetal

POM C Acetal copolymer is rigid and strong with a low coefficient of friction against metals and other plastics.  POM C is creep resistant and ideal for parts where dimensional stability is important like plastic gears.  POM C does not absorb moisture and is resistant to a wide range of solvents; however resistance to strong acids is poor.  Its physical properties remain constant in a variety of environments.  Low moisture absorption results in excellent dimensional stability for close-tolerance machined parts. In high moisture or submerged applications, POM C bearings outperform nylon 4 to 1.

POM C Acetal is used extensively in traditional “metals” applications where the combination of strength and toughness offer winning advantages.


  • High mechanical strength, hardness and stiffness
  • Good impact strength at temperatures as low as -40°C
  • Excellent resilience
  • Good creep resistance and very good dimensional stability
  • Good electrical insulating and dielectric properties
  • Good sliding properties and wear resistance
  • Very low moisture absorption (resistance to hydrolysis)
  • Good load bearing properties
  • Excellent machining capabilities – ideal for close tolerance parts.
  • AFRIPOM POM C meets EU and FDA requirements for food contact applications.


Sustarin is ideally suited for close tolerance mechanical parts which require dimensional stability.

  • Mechanical engineering,
  • Automotive industry,
  • Manufacture of chemical equipment: e.g.
    • Meter components
    • Sliding elements
    • Plastic Gears
    • Control discs
    • Impellers
    • Bearings
    • Pump components
    • Valve bodies
    • Catch elements
    • Coil bodies
    • Bearing cages
    • Clutch parts
    • Pump housings

SUSTARIN® C can be used in “hot water” applications up to 60°C without any hydrolysis affect.

Stock Offering

  • Available in sheets, rods, tubes and finished components