Griffo
Contributor
No stainless is completely impervious to rusting. There are not many brands of latches and many manufacturers use the same latch. You can buy a replacement many places or call Dive Rite they might give you a new one for free, but I would not change it until it is really broken, as the replacement will likely do the same thing.
Unlike TSandM, I've never seen a latch fail.
Be very careful with silicon spray, if you try that. I think a marine corrosion spray would be better.
I get that no stainless is perfect, however most my other stainles parts don't rust as long as they get rinsed after each dive. Also, on these hinges, there are what, 3 different hinges and only one particular one rusts - they must have chosen a different allow for that part for some manufacturing reason.