On the floor, a Sidel blow molder on a PET line doesn’t sit around waiting for heating drift to show up in the bottles. When the SK15 base lamp starts underperforming, preform heating goes off-target, and you start seeing axial splits, wall haze, and weight creep. Downtime piles up fast. What matters, technically The SK15 blower lamp is a short-wave infrared halogen emitter, built around a quartz envelope and an R7s connector, and it’s engineered to match the Sidel SK15 heating unit footprint. We spec it to the OEM’s thermal profile—not just the physical dimensions. Output is tuned for quick response and tight temperature control across the heating tunnel, so the preform surface tracks the set curve. The base alignment matches the reflector geometry, keeping the beam where the preform needs it. And it runs at the same wattage and voltage as the original, so you don’t have to re-balance the zones. Why it works in practice Drop in the SK15 lamp and you get repeatable preform heating, shot after shot. That translates to fewer rejects, less scrap, and bottle weight that stays consistent through the run. Fast start-up and stable hold cut warm-up time and keep cycle speed where it should be. Energy use stays in line because the lamp hits target temperature without overshoot, and the materials stand up to the heat and shock of continuous stretch blow molding. Things to keep straight This lamp is a direct replacement for the Sidel SK15, but double-check the exact wattage and voltage on your machine’s label before ordering. Match the connector type and confirm the reflector condition—pitting or oxidation scatters output and throws heating off. Handle the quartz envelope by the base only; oils and scratches can create hot spots and cut life short. You’ll get consistent performance when the tunnel airflow is clean and the zone setpoints are within spec.