Shop for Homopolymer Acetal sheets. Homopolymer acetal (Delrin®) sheet has superior room temperature strength, stiffness, and toughness. Easy to machine, acetal makes an outstanding choice for applications that require complex, tight tolerances. Custom cuts and cut-to-size pieces. Have machined into fabricated parts. Acetal comes in several colors. Stocked materials typically ship in 2-5 business days. Can’t find what you need? Get a quote.