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High Corrosion Resistance Magnets
(168 Products)High corrosion magnets are designed to operate in the harshest of environments where magnets are most vulnerable to rusting. Our range of corrosion resistant magnets are designed to maintain a superior performance outdoors where other magnets are likely to fail.
![Y30BH Ceramic Ring Magnet - 7-15/32 in. O.D. x 3-11/32 in. I.D. x 29/32 in. thick - 35.28lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/cHst1BAhTeIaYJ15rjdAbk7FMdpEAuazQlOcqYne.jpg)
![MagFlex® Self-Adhesive Business Card Magnet - 3-3/8 in. Long x 2 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/VtwKSnVB03gF8HEdnHBV3hJDFaOEPsHrP09oBuvA.jpg)
![Medium Red Alnico Horseshoe Magnet - 1-9/16 in. x 1 in. x 1 in. - 19.85lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Ivn5zSwapUI7zkW7Pf4kyvOLIxG2swqU2as92jP0.jpg)
![Samarium Cobalt High Tempreature Disc Magnet - 1 in. dia x 13/16 in. - 27.12lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Oz4cwCSoqu5FkYYFNnVkw9hHBWZ7U3qz08eGsWqQ.jpg)
![MagFlex® Lite Flexible Dry Erase Magnetic Label - 4-9/16 in. Long x 1-9/16 in. Wide](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/nTQw8WCBEQKJaD3QAIs7HZyv47ZoS7fiv4vxkZeb.jpg)
![Samarium Cobalt Ring Magnet - 5/32 in. dia x 3/16 in. thick - 0.97lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/3Rd2wy9Ge5ZCboWwZ2kc74oh5MGk0kyYwsXptIoX.jpg)
![N42 Neodymium Zinc Plated Disc Magnet - 1 in. dia x 3/8 in. thick - 36.38lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/lIVIfpRmG9351AD6YuIlyH8R5YzkCGshiKtrGXoC.jpg)
![Samarium Cobalt Disc Magnet - 5/16 in. dia x 1/16 in. thick - 1.54lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/YtC9b3itKpuYceKICIHai6FAq5X3q6yoR578xQ7p.jpg)
![Ceramic Channel Magnet - 1 in. x 1 in. x 1/4 in. thick x 1/8 in. hole - 13.45lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/yOeRYUEPLhBKZudfMBxoh1oJDbcO6xkVp0kyuFVC.jpg)
![Samarium Cobalt Disc Magnet - 1/16 in. dia x 1/32 in. thick - 0.13lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Gm0hagcP618iC0HfBKAyUmrWIc9qUa9LlvRdWJ5r.jpg)
![Y30BH Ceramic Rectangular Magnet - 2-1/4 in. x 13/16 in. x 19/32 in. thick - 10.8lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/zOUdT2IAgHLu2AthvEitTBEmP8M3OGbwxnuR1icV.jpg)
![Samarium Cobalt Disc Magnet - 11/32 in. dia x 1/8 in. thick - 2.2lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/GsFag2upJlKZVAouJjqX7R4qKITJtin4QuNmjh5L.jpg)
![Samarium Cobalt Disc Magnet - 3/8 in. dia x 1/16 in. thick - 1.76lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Y41AuCnSD9jXmD6gni4deL0XRmMEmZequ5IzQv27.jpg)
![Y30BH Ceramic Rectangular Magnet - 1-7/8 in. x 3/4 in. x 3/16 in. thick - 3.31lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/LLXmcEevoAAs0Su3d6SfX0zelI9aAc8goHhORZ5G.jpg)
![Samarium Cobalt Square Magnet - 3/8 in. x 3/8 in. x 3/16 in. thick - 5.07lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/0qvdnrorVQ6R1NvYVum00PvfQMaXGeWQEBY8TyAt.jpg)
![Samarium Cobalt High Tempreature Rod Magnet - 3/16 in. dia x 3/8 in. thick - 1.52lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/lpO6xbnnfWEzic4EYBK1ZM4pcN83qtrAGbWFDllv.jpg)
![Small Red Alnico Horseshoe Magnet - 1-3/16 in. x 13/16 in. x 13/16 in. 1/8 in. hole - 9.92lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Ivn5zSwapUI7zkW7Pf4kyvOLIxG2swqU2as92jP0.jpg)
![Samarium Cobalt Pot Magnet - 1 in. dia x 3/8 in. thick x M4 thread hole - 36.82lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/G0EdTb8XGeRiYhBrNb5e84mvercrnqK1burnf2EZ.png)
![N42 Neodymium PTFE Coated Disc Magnet - 1-1/8 in. dia x 7/16 in. thick - 13.23lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/Me9EUxgm5DDF3pjjXlGAXpPNr4fWuiiCjJJtp1YV.jpg)
![Y30BH Ceramic Ring Magnet - 2-15/16 in. O.D. x 1-9/16 in. I.D. x 19/32 in. thick - 15.44lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/XEmVzoLP23FWFpmsVRFLe4hC7KCXna3JgNCgPCvU.jpg)
![Ceramic Pot Magnet with Swivel Hook - 1-7/16 in. dia - 5.07lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/xtIgdgfBRFN2OzDUOBFLKZRbBDRfmnakYZR9VFLc.jpg)
![Ceramic Pot Magnet with Swivel Hook - 2-1/16 in. dia](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/glUmiuLHIOMq62zI6BZh8QdMyR5eera0L6yyurqY.jpg)
![MagFlex® Self-Adhesive Flexible Magnetic Dots - 1-3/16 in. dia - 54 per A4 Sheet](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/sYodSwI5dFpdpKDkIsEI9jiZ4SvvtuwUbGXoNmCV.jpg)
![Y30BH Ceramic Rectangular Magnet - 3 in. x 1-7/8 in. x 13/16 in. thick - 11.03lbs Pull](https://www.first4magnets.com/us/image-factory/7d7c302e6b38a10df6cc5b6485fd1cef26b4b855~436x436/images/products/YNlY0Up4uehcTrTUUzmTvEqlkVSNGonBOiLi7JES.jpg)
High Corrosion Resistance Magnets
Corrosion is the most common cause for a magnet failing. If you are using magnets outdoors, or in an environment in which they are likely to come into regular contact with moisture then you need a material that won’t rust. Here, you will find a range of ceramic magnets, samarium cobalt magnets, alnico magnets and flexible magnets that all have excellent resistance to corrosion without any further coating or protection. Magnets that are susceptible to corrosion are often plated to give some protection, however this is often not enough to withstand continued use in moist environments, the magnets may look fine on the outside but could be rusting from the inside out.
Samarium cobalt magnets are made of an alloy with very little iron content, which gives them their superior resistance, while ceramic magnets are made from iron-oxide which is commonly known as rust and therefore won’t corrode further once manufactured.