Acetal is a semi-crystalline engineering plastic manufactured by the polymerisation of formaldehyde. It absorbs very little moisture, offers good creep resistance and retains dimensionally stability over time.
Acetal has a high mechanical strength, relative hardness and stiffness that make it ideally suited for the replacement of steel or other metallic component parts. There are two grades available; Co-polymer, which exhibits slightly better chemical resistance and Homopolymer, which exhibits lower thermal expansion and improved mechanical strength.