Duratron T4203 PAI offers the best toughness and impact strength of all Duratron PAI grades. This extruded Duratron PAI grade is very popular for precision parts in high-tech equipment. In addition, its good electrical insulating ability provides numerous possibilities in the field of electrical components. Compression moulded Duratron T4503 PAI is similar in composition to Duratron T4203 PAI, and is selected when larger shapes are required.