Rubber Coated Ring Magnet D25.4xd7.9x6.3mm)

1" od x 5/16" id x 1/4" thi (Ø25.4-7.9x6.3mm) is the most common size in category of ring shaped waterproof neodymium magnet,it is also offered with plastic and rubber coating. Rubber coating is prefered to limit slipping on smooth surfaces. We use n52 neodymium to make rubber coated ring magnets 1" od x 5/16" id x 1/4" thi (Ø25.4-7.9x6.3mm), the pull force is approx 11 lbs. You’re welcome to consult other sizes of waterproof neodymium magnets rubberized.