Magnetic couplings are considered suitable for many industrial applications where a separation is required
between the driver and the driven. Utilizing magnetic couplings allows the transmission of torque without any
mechanical contact. Generally, permanent magnets (PMs) are utilized in magnetic couplings instead of electromagnets
to avoid extra circuitry. Accurate design and analysis of magnetic coupling are essential to reduce the
PM volume for the required output performance. 3D finite element method (FEM) is considered the most accurate
as it takes into account the end effects, which arises due to a shorter stack length as compared to the diameter
of the coupling. In this paper, a permanent magnet coupling (PMC) is designed and optimized to be
installed in a chemical pump that is handling high-temperature fluid. A prototype was also manufactured and
tested in the laboratory to verify the analysis.