Polyformaldehyde vs. Polyoxymethylene — What's the Difference?

(chemistry) polyoxymethylene

Polyoxymethylene (POM), also known as acetal, polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability. As with many other synthetic polymers, it is produced by different chemical firms with slightly different formulas and sold variously by such names as Delrin, Kocetal, Ultraform, Celcon, Ramtal, Duracon, Kepital, Polypenco, and Hostaform.

(chemistry) A polymer of formaldehyde having a repeat unit of -CH₂-O- ; it is used in engineering to make small gears etc