3 x 1/2 Inch Neodymium Rare Earth Rubber Coated Disc Mounting Magnet N42 PN: RMD-B-Z0

• Dimensions:
  3" dia x 1/2" thick
      Hole Sized for 1/4" Screw
• Material: Assembly of:
      Steel backplate,
      NdFeB magnet, grade N42, &
      Silicone Rubber Coating, Black
• Plating/Coating: Silicone Rubber
• Weight: 9.51 oz. (269.2 g)
• Pull Force: 165 lbs
• Brmax: 13,200 Gauss
• BHmax: 42 MGOe

This silicone rubber coated mounting magnet is another new, water resistant design available at K&J Magnetics.  It allows for easy mounting with a common screw.

The best feature of these magnets is their high-friction silicone rubber coating.  When mounting objects to a vertical surface (i.e., a steel wall), these magnets are great for holding up objects without excessive or expensive magnetic strength.

These magnets are water resistant, but not strictly waterproof. The zinc plated magnets are encased in rubber, but a small area of steel is exposed. For more rust resistance, consider caulking the hole and your screw after installation.