The black polyetherimide (PEI) insulation material handles that temperature window without softening — PEI is a high-heat thermoplastic, not the standard nylon you see on lower-cost housings. The locking ramp is the feature that matters most for field reliability: it engages with the matching ramp on the receptacle and requires a deliberate squeeze to release, so a cable tug or machine vibration won't unseat it.
Use the Molex crimp tool for the designated wire gauge (typically 14-20 AWG for the MultiCat system, but confirm with the contact datasheet). The free-hanging mount means no panel cutout or PCB footprint is needed — the connector floats on the wire harness and is secured by the locking ramp alone.