<p>An accessory connector (102) and a method (200) for providing a robust submersible seal is provided. The method can include over molding (202) a high-temperature plastic (122) around a plurality of interconnect pins (112) to produce a header (120), over molding (204) a low-temperature plastic (132) to the header to produce an insert (130), over molding (206) a side connector assembly (142) along a periphery of the insert to produce an interface (140), and ultrasonically welding (212) the insert to a housing (151) to blend (153) the low-temperature plastic with the housing.</p>
