Hot runners play a mission critical role in the injection molding process. Hot runner systems are a means to convey molten plastic from injection molding machines into molds, ensuring proper flow rate and pressure, while maintaining optimum temperature levels. Hot runners are essential to managing and controlling melt distribution in the injection molding process while enhancing productivity, product aesthetics/function, energy efficiency, performance, reduced part cost and reduced raw material wastage. Hot runners are integral in ensuring flawless part quality and part surface finish. Integrated into the mold and completely custom, any product design changes create the need for a new mold and hot runner system.