Which wear parts must be kept in stock for daily maintenance of hot runner injection molds?

• Hot tip and gate bushing wear and carbonize; stock one set per cavity.
• Heater bands and thermocouples burn out; keep 2-3 sets of same wattage.
• Valve pins and guide bushings wear causing drool; measure clearance periodically.
• Seals and thermal insulation pads age and leak; stock annual consumption.