Liquid propellant turbopumps and other hydraulic devices are very critical regarding the prevention or minimisation of the leakage of liquids under pressure. Centrifugal seals, also referred as sealing impellers, are a non-contact type dynamic seals used in turbomachinery, especially in space applications. These seals create a radial pressure gradient across the fluid, on the account of centrifugal forces, to cause the sealing effect. Basic construction of a typical centrifugal seal consists of a rotating disc inside a stationary casing, one side of the disc is the incoming fluid that flows across the submerged disc while the other side (sometimes consists of blades or slots) is the sealing side that creates the sealing effect due to the drop in pressure as the fluid flows radially inwards. An experimental study was taken up to improve the understanding on the performance of centrifugal seal (with slots on sealing side). A test rig was realized to study the performance, i.e. power consumption (characterized by moment coefficient, Cm) and sealing capacity (characterized by swirl factor, Kgr) by carrying out tests using LN2 as working fluid.