Polyacetal/pom sheets pom sheets plastic is a semi crystalline thermoplastic with exceptional durability in mechanical applications and rigidity. Delrin machined parts polestar polyacetal / delrin rods offer a unique combination of properties not available with metals or other plastics. Because of its reduced water acetal s, Absorption rate physical properties remain constant in every environment, Resulting in an ideally suited and stable product designed for precise fitting mechanical parts and electrical insulators of delrin machined parts. A distinction is made between acetal homopolymers pom, H, Mainly manufactured from dupont delrin and acetal copolymers pom, C in regard to their properties. Due to its the properties, Higher crystallinity of pom h include a slightly higher density, Hardness and strength. Pom c material, However, Has higher chemical durability and a lower melting point than pom h.