Considered the most cost-effective molding process, rubber injection molding is the best choice for high-volume production runs of small size products that require tight tolerances and little to no finishing. Rubber injection molding involves feeding material into a press, which is then warmed and injected into a mold. The rubber injection molding process is the most precise compared to compression and transfer molding, because the injection process controls the pressure, temperature, and speed at which the material enters the mold. While injection molding costs more than compression and transfer molding due to higher tooling costs and longer initial setup times, it is still considered a cost-effective molding process.