On the floor, minutes are money. When the preheat oven starts hunting for temperature, preforms come out inconsistent, and you’re spending more time swapping lamps than making bottles. We built the R7s halogen lamp for that exact headache—engineered to match the original specs of your PET preheat oven, without the OEM price. What matters under the hood This is a short-wave infrared halogen emitter, in a standard R7s form factor, cut for the tight geometry and thermal profile of PET preheat tunnels. The quartz envelope takes rapid thermal cycling in stride, and the tungsten filament responds fast—so you get stable, repeatable heating across the preform wall. We match the original wattage, voltage, length, and base type, so it drops straight into existing sockets and reflectors. The output is tuned for PET: quick energy absorption, minimal surface scorch, and consistent stretch behavior once the blow molder takes over. Why this fixes the bottleneck In stretch blow molding, the oven is the first pinch point. If heating is slow or uneven, you end up compensating with slower cycles, higher energy draw, or settings that push rejects. The R7s restores the designed heating curve, so you can run the machine the way it was intended—stable preform temperature, predictable biaxial stretch, and fewer pinholes and crystallization issues. Replacement cost comes down because you keep the same oven configuration and avoid a full retrofit. Energy use drops because the lamp hits setpoint fast and holds it with less swing. Field notes for a clean install Installation is straightforward—check socket condition, clean the reflector, and make sure the voltage matches the label. These run hot, so let them cool before handling and keep reflectors free of dust and flaking. If the oven has older sockets or corroded contacts, fix those first; poor contact causes flicker and uneven heating. For best life, run the oven within its rated range and avoid the thermal shock that comes from constant start-stop cycles.