Water swivels are crucial components in drilling operations, particularly in water well drilling, geothermal drilling, and mineral exploration. These swivels are connected at the uppermost part of the drill string, typically above the kelly or top drive. Their primary function is to provide an effective watertight seal between the rotating and non-rotating sections of the drill string. This seal is essential because it allows drilling fluids, such as water, mud, or other specialized fluids, to be pumped down through the center of the drill string to the bottom of the borehole.