POM sheet material also is the best Thermosetting plasitc, No centerline porosity, Good dimensional stability, Low moisture absorption, Good wear and abrasion resistance properties, Excellent machinability, Good combination of mechanical properties, Chemical resistance to fuels and solvents and The most well known brand name of POM are ACETAL & Derlin. due to POM production had the best properties, so POM production widely used as variety of industrial applications requiring good strength and toughness, dimensional stability, wear resistance and the ability to operate in a wet environment with little absorption. Material handling, machinery and fluid handling. Typical applications are gears, wear strips, bushings, pump parts, fittings and rollers.