If I put a mixture of sand and salt water in these, would they leak? How secure is the cork?
1700483
They wouldn't leak; however, please refer to the dimensions, they are pretty tiny.
1700484
Cork is very secure. I have put water in them. It does slowly evaporate after several months, but no leakage. You could always seal around it with some type of glue/adhesive.
1700485
I do not believe they would leak. I found that the cork was quite secure. I, however, did not put any liquid in them when I used them. Hope it works for you.
1005267
The lid seals pretty tight with a nice fit, but I am unsure if the are water tight. Maybe if your devices were protected in plastic to prevent erosion they may be what you want.
956749
They seem to be pretty air and water tight ... Like with any container, there may be a little leakage, but my lid goes on tight and doesn't move when on. I had to cut holes in my lid for my bread gasses to escape.
1769571
They are permeable to water but not sand. They could be used for a retaining wall, IMO.
1158513
Not really. They will protect against moderate sloshing but will leak if container is tilted to its side.
1670398
I would think so, yes. However, they are very lightweight, so when it is open a liquid could easily get bumped and spilled. Also, since it is a liquid, I would suggest putting whatever you store in a Ziploc as a backup. I don't expect it would leak (it seems like a good seal), but I do this anytime when I travel with shampoos, lotions, etc., just in case.
1232126
Cork is a great natural material. It is waterproof and resists dirt. It probably doesn't have the longevity of vinyl, but it works well for this application. I really like the mount.
1059893
They are pretty heavy for wood coasters. They are solid, no cork filler. I would think they would work fine outdoors.
1053272
Yes they are leakproof. We've never had a problem. I carry one in my purse. HOWEVER, folks are right about the caps. a few of mine are starting to crack, possibly from over tightening. I'm going to get replacements caps because the bottles are excellent.
1967464
I wouldn't submerge these in water permanently. A strong rain or being temporary submerged isn't a problem as long as it's not cracked from what I've seen.
785066
They're fairly well sealed. I mounted mine up high where they won't be submerged, but I wouldn't hesitate to dunk them. I have faith in their ability to keep on working.
1174109
l haven't used mine yet. But my brother-in-laws didn't seem to be leaking at the beach last year. He liked it so much he bought his son one for x-mas.
1583481
I did not have trouble with synthetic corks. I live in a humid climate. Perhaps if you live in a dry area with low humidity it will make a difference.
1566837
We filled ours with sand. Not sure the water would hold or how it would react with the heavy plastic. I think the water would leak out. Sorry I couldn't be more helpful!
345813
I don't believe that these are designed to be filled with water, I do believe they would leak badly. They work perfectly if you put approx 40 pounds of play sand (available at Home Depot) into each bag--good luck!
198584
I gave it to my mother-in-law as a gift. I just checked in with her today to see how they are holding up. She said she uses them often and has not had a problem with them leaking.
2166875
I have had some leaks when liquids were in them and they were shaken upside down. IMO, I'd not take them in a backpack unless closed in a ziploc.