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Approaching this too casually?

Started Dec 1, 2019 | Discussions thread
Barmaglot_07 Contributing Member • Posts: 633
Re: Approaching this too casually?

It's actually the shallow depths that are the most dangerous - o-ring seals work best when squeezed tight, and on the surface, the housing latch is the only thing putting pressure on the seal, leading to the danger of a stray bump opening a path for water intrusion - and regardless of what Apple says, I would not expose a phone of any kind to saltwater immersion, not unless I considered it to be completely disposable. Vacuum systems, in addition to their primary function (signaling if air leaks in, which lets you know that the housing is not properly sealed) mitigate this issue by making the atmospheric air or shallow water exert significant pressure on the housing door, sealing it tight against the o-ring(s) - when a housing is evacuated, opening its door (with the latches open) ranges from difficult to completely impossible because the air squeezes it closed with a force of dozens to hundreds of kilograms, depending on door size and internal pressure.

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