When comparing Acetal vs delrin its important to understand that Delrin is actually a brand name for acetal homopolymer produced by DuPont. Acetal is a strong, low-friction engineering thermoplastic available in both homopolymer and copolymer forms. Delrin offers slightly higher stiffness, tensile strength, and better machinability, making it ideal for precision parts like gears and bushings. Acetal copolymer, however, provides improved chemical resistance and better performance in high-moisture environments. Both materials are widely used in CNC machining and industrial applications due to their durability, dimensional stability, and wear resistance. The right choice depends on your specific mechanical and environmental requirements.