Water sealing magnets

MixedFruitBasket · Jun 4, 2020

I need a few magnets to hold on frag racks that, unfortunately, did not have strong enough magnets on them or came with suction cups that didn't work worth a penny. I'd like to get some of the long rectangle magnets along with some of the round ones. I see some that claim to be epoxy sealed but I'm not comfortable without knowing for sure they won't rust. Can anyone suggest where I can go to find properly sealed magnets? Bonus points for rubber sealed. Or is there an easy way to seal them myself? I don't have any kind of workshop so however it's done it would have to be fairly simple. Out of curiosity, would the commercial thickness posable balloons work? (you know the kind they make into balloon animals). I'm not talking about the ones that are common, but the ones that can't be blown up by anything but an actual air tank.

Billdogg · Jun 4, 2020

www.kjmagnetics.com has any and every magnet you might need. I use the 3/4 diameter x 3/8 thick plastic coated ones that have, I think ~ 10.9lb pull. I use two on the inside on a frag rack and two on the outside. Unless you are putting boulders on your frag rack they will be more than enough. I also use the same ones to hold on 3/4" plywood doors for some of the stands I've built over the years.

andrewey · Jun 4, 2020

I usually order from K&J magnets. I avoid epoxy coated due to cracking/leaking long term and go with plastic coated.

MixedFruitBasket · Jun 4, 2020

Billdogg said:
www.kjmagnetics.com has any and every magnet you might need. I use the 3/4 diameter x 3/8 thick plastic coated ones that have, I think ~ 10.9lb pull. I use two on the inside on a frag rack and two on the outside. Unless you are putting boulders on your frag rack they will be more than enough. I also use the same ones to hold on 3/4" plywood doors for some of the stands I've built over the years.

I looked on there, and maybe I'm searching incorrectly but I'm having a hard time finding a usable size thats not 5-10.00 per magnet, not pair, but for each one. Or is that normal?

Snoopy 67 · Jun 4, 2020

Normal prices for these items & I've used them for a few years with -0- problems.

andrewey · Jun 4, 2020

Yup, mine usually cost something like 4-5 a magnet if I'm doing a larger frag rack or 2-3 bucks a magnet if it's something that won't have to support much weight.

Dr. Dendrostein · Jun 4, 2020

MixedFruitBasket said:
I need a few magnets to hold on frag racks that, unfortunately, did not have strong enough magnets on them or came with suction cups that didn't work worth a penny. I'd like to get some of the long rectangle magnets along with some of the round ones. I see some that claim to be epoxy sealed but I'm not comfortable without knowing for sure they won't rust. Can anyone suggest where I can go to find properly sealed magnets? Bonus points for rubber sealed. Or is there an easy way to seal them myself? I don't have any kind of workshop so however it's done it would have to be fairly simple. Out of curiosity, would the commercial thickness posable balloons work? (you know the kind they make into balloon animals). I'm not talking about the ones that are common, but the ones that can't be blown up by anything but an actual air tank.

Just remember rare earth magnets the strongest
Also you can dip them and liquid plastic, and you don't need a workshop to be able to do that, also let them dry after they dip and dip them again so you get a thick layer of rubber on them oh, that's what I do to all my sensors that are stainless steel going directly into the tank, sensors still coated with plastic after few years so it lasts