R842 - Neodymium Ring Magnet - 1/2" Dia x 1/4" ID x 1/8" Thi

• Dimensions: 1/2" od x 1/4" id x 1/8" thick
• Tolerances: ±0.004" x ±0.004" x ±0.004"
• Material: NdFeB, Grade N42
• Plating/Coating: Ni-Cu-Ni (Nickel)
• Magnetization Direction: Axial (Poles on Flat Ends)
• Weight: 0.0798 oz. (2.26 g)
• Pull Force, Case 1: 5.35 lbs
• Pull Force, Case 2: 12.30 lbs
• Max Operating Temp: 176ºF (80ºC)
• Brmax: 13,200 Gauss
• BHmax: 42 MGOe

The R842 is an often requested size that has now been added to our stock inventory. It is a great ring for science experiments and demonstrations. Buy a bunch and save!