From the pond?Wow. I'll be moving some .22 ammo tomorrow
wouldn't a sensible person just fill the box with rocks or something for that test?
Just remember what Burt Gummer said... "freeze-dried, foil sealed. It's got to be foil. Plastic is not an oxygen barrier"
@Burt Gummer Did you say this? I demand a recount.
haha the actual " one factiously" from Tremors II in reference to MRE's
It'll leak. A real ammo can has a wider seal I think. I don't think that MTM can seal will standing the pressure. I could be wrong. Curious like you now. I'd throw one in my pond but we have a turtle big enough to eat that can lolOk. This has my interest. Maybe it was the brand he used happened to be crappy.
Here's an MTM brand can that's going into the pond with rocks in it to see how it does. No gaps in the sealthat I can see.
View attachment 14487
I'm sure it was the brand. I think his point was the military cans are more reliable than plastic. My take on it was there's several brands of plastic ones find the quality ones to use check the seals just like you would on the metal ones.Ok. This has my interest. Maybe it was the brand he used happened to be crappy.
Here's an MTM brand can that's going into the pond with rocks in it to see how it does. No gaps in the sealthat I can see.
View attachment 14487
Would it make sense to test with a vacuum pump? Thread the can lid for a line, add a gauge and shutoff to the line. Apply some reasonable amount of vacuum, something short of crushing the can, then close the valve and see if the needle moves over the course of a month or two. Seems easy enough and I even have the gear. Could do the same with pressure.
The downside I see is that in surplus cans the seals are the variable. Maybe connect the line to the can and then use it to test the seals in as many lids as you want. Hmmm, might have to build that.
I've sunk rubber boats, dive tanks and equipment in lakes for later recovery. Dove with USGI ammo cans down to 66' without issues of leaking.
That would be a good test. Vacuum inside the can would compress the seal more tightly (good) and would simulate the external pressure caused by sinking the can under water. Internal pressure would try to lift the lid and decompress the seal (bad).