A hydrostatic seal is a non-contacting mechanical seal that operates under an equilibrium of forces. Unlike traditional hydrodynamic seals, Hydrostatic seals have two different pressure zones that are used to establish a balanced pressure zone between two seal faces. The two pressure system makes the seal unique because typical mechanical seals have one pressure zone that created causes a buildup of pressure that will eventually cause the seal to malfunction. After pressure has come to an equilibrium at the seal face, an incompressible fluid is then released between the two seal faces. The fluid creates a film around the seal face that acts as a lubricant and as a medium for the substance flowing through the seal. Hydrostatic seals have been used in the aircraft industry; however they have seen very little commercial use because there is minimal research about the seals. Pressure and Operation Once pressure is applied and the seal comes together, a viscous liquid is released between the two seal faces and a thin film is formed to help create an airtight seal. If the amount of pressure inside of the seal is increased and there is an excess of pressure between the face plates, the two faces move apart and the seal begins to open. On the contrary, if the pressure is dropped and there is not enough pressure within the seal, the two seal faces come together and the hydrostatic seal begins to form. The flow rate of the system can also be controlled with great accuracy by limiting the amount of pressure within the seal. Pressure zones can be changed to create an equilibrium within the system that would allow less leakage in the overall system. Seal Face The seals dual pressure zone helps maintain a constant pressure zone within the system. The constant pressure stabilizes the seal and does not allow the two seal faces to come in contact. There are face control grooves on both of seal faces that stabilize each face in the axial direction. The slightest axial movement will cause the two seal faces to touch and erosion of the seal will begin to occur. The rear face plate consists of a small opening that houses the injection system, which feeds the incompressible fluids through the system. Once the fluid is inside the seal, it forms a thin film around the entire inner system. After creating the film, the fluids