Acetal plastic, commonly known by the brand name Delrin®, is a thermoplastic polymer manufactured by the polymerization of formaldehyde. The chemical composition, regular structure and high crystallinity of acetal resins give parts made of acetal a combination of physical properties not available with metals or other plastics. Acetal is a low friction, high strength engineering plastic that has excellent wear properties in both dry and wet environments.DELRIN® is a crystalline plastic bridges the gap between metals and plastics and offers an excellent balance of properties. DELRIN® possesses creep resistance and toughness and high tensile strength. It is chemically resistant to hydrocarbons, solvents, and neutral chemicals. It also exhibits low moisture absorption. These properties along with its fatigue endurance make DELRIN® ideal for many industrial applications.