Alnico disc and plug magnets be offering prime temperature and corrosion resistance in addition to better magnetic pull than ceramic magnets. They’re in an unpainted colour of grey.
$12.57 (as of March 7, 2019, 8:30 am)
Disc and Plug magnets made from Alnico Grade 5 material, unpainted in color gray and have a maximum temperature of 550 degrees C
Diameter tolerance is +/- 0.016″, thickness tolerances is +/- 0.05″
0.840-inch diameter, 0.626-inch thickness