The UL94 V-0 PBT housing keeps it safe inside an enclosure.
What the Gold Flash Means for Field Life
In a connector that's mated once and left alone, it's fine: the gold prevents oxidation during storage and the first mate wipes clean. For high-cycle applications, step up to a header with 15 or 30 microinch gold. The post finish is tin (98.4 microinches), which solders well into a through-hole board. The 0.126" (3.20mm) post length gives enough stand-off for a standard 1.6mm PCB.
The 1-825433-8 gives you 18 positions in a straight, unshrouded format — if you need the extra circuits and don't require a shroud, this is the one. The 1376366-8 uses a 2.20mm pitch and tin mating finish, so the footprint and contact durability differ.