POM: POM (聚甲醛)
Polyoxymethylene, a semi-crystalline engineering plastic with high stiffness, low friction and good fatigue resistance. It is the main material for moulded resin teeth, end stops and many slider bodies. POM moulds precisely, keeps its dimensions in humid conditions and accepts strong colour masterbatches. Its low surface energy helps teeth slide smoothly. Grades are selected for impact strength and flow, and alternative grades are evaluated for compliance.