... two versions per size – the A version has a North Pole face visible; the B version has a South Pole face visible (so ... the A and B versions will stick to each ... , PTFE, Parylene Everlube, Passivation and more.Magnetization Directiona. Thickness Magnetized b. Axially Magnetized c. Diametrally Magnetized d. Multi-poles magnetized e ...