Image showing high precision moulded lubricated gear wheel

Acetal (POM) polymers are semi-crystalline. They offer excellent inherent lubricity, fatigue resistance, and chemical resistance. Acetals suffer from outgassing problems at elevated temperatures, and are brittle at low temperatures. Glass filled, and added lubrication grades are available, flame retardant grades are not.

4POM® is the registered trade name for Acetal (POM) compounds produced by 4PLAS. We offer a wide range of Acetal compounds including standard ex-stock grades, short lead time custom compound and colour solutions and high performance compounds.


Image of close fit enclosure box form electrical and electronic use

4POM® materials offer the following key properties:

  • Excellent stiffness and hardness
  • Good mechanical strength
  • Very good toughness
  • Excellent abrasion resistance and low friction
  • Low moisture absorption
  • Good creep and fatigue behaviour
  • High dimensional stability - low warpage
  • Good thermal stability
  • Good electrical properties
  • Very good chemical resistance
  • Very good surface finish
  • Good flow and processing properties


Image showing long lasting, low wear, low friction pulley or guide wheel

The 4POM® Acetal standard range includes the following products:

  • Prime natural and black
  • Industrial
  • WRAS approved
  • Range of melt flows

With the addition of a wide range of modifiers, stabilisers, speciality additives and customised colours, 4POM® can be compounded as:

For individual grades or to search using a wide range of criteria please use our interactive material selector.

Our standard range is comprehensive, however should you not find what you are looking for within the data available on this website, we offer Custom Compounds to suit the requirements of specific applications.

If you would like advice on selecting suitable materials, or you cannot find what you are looking for, please contact us and one of our team will be pleased to assist you.

4Plas Account

An account provides you with full online access to data and documentation for all 4PLAS materials, the 4PLAS brochure, plus the facility to print and download any document.