Acetal/Polyoxymethylene (POM)

Polyoxymethylene, also known as acetal, polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability. Also known by Dupont’s brand name Delrin.

There are two types of acetals: homopolymer (POM-H) and copolymer (POM-C). Homopolymer is not recommended for use in strong caustics. Copolymer is more resistant to hot water and hot air than homopolymer.

Typical applications are gears, cams, bushings, clips, lugs, door handles, housings, fuel systems, seat belt components, steering columns, window support brackets, cranks, and handles.

Acetals are available in sheet, plate (from 1/16” through 2” thick), and rods (from 1/8” to 6” plus diameter.

In its rigid form, PVC is used in Industrial Piping Applications (pipes, valves, fittings, and sheet), chemical processing, high purity applications, water and waste treatment, irrigation, agriculture, corrosive fume handling (duct), food contact applications, and drain waste, and vent (plumbing).