In the first step, the metal insert is partially premolded with Seal-Fit, then conventionally overmolded with housing plastics such as polyamide Ultramid A3EG6 and polybutylene terephthalate Ultradur B4300 G6. Metal parts overmolded with Seal-Fit are sealed against water, oil, and gas and can serve in mechatronic components such as automotive transmission and brake controls, sensors, and plug-in connectors. BASF Corp., 100 Campus Dr., Florham Park, NJ 07932, (973) 245-6000,