A sealing system for a gas turbine engine includes a first surface and a second surface spaced a dimension away from the first surface defining a gap through which a fluid can flow. At least one recess is formed in one of the first surface and the second surface and is oriented such that the fluid flow through the gap crosses the at least one recess. The recess is configured to restrict the fluid flow through the gap in comparison to if the at least one recess were not present, all other things being equal.

A sealing system for a gas turbine engine includes a first surface and a second surface spaced a dimension away from the first surface defining a gap through which a fluid can flow. At least one recess is formed in one of the first surface and the second surface and is oriented such that the fluid flow through the gap crosses the at least one recess. The recess is configured to restrict the fluid flow through the gap in comparison to if the at least one recess were not present, all other things being equal.

A shaft sealing arrangement includes a first seal and a second seal, wherein the first seal is designed in the form of a lip seal and the second seal is designed in the form of a mechanical seal. When the shaft is at a standstill, the lip seal performs the sealing action and, when the shaft is rotating, the mechanical seal performs the sealing action.

A rotary machine includes a rotating shaft, a housing that surrounds a portion of the rotating shaft and has an initial pressure therein and a gas seal that pumps gas out of the housing to reduce pressure in the housing to an operating pressure that is less than the initial pressure.

One or more techniques and/or systems are disclosed for mitigating fluid loss or leakage from a fluid pump with a rotating shaft driving a pumping mechanism. A packing gland component can have an internal seal formed by two dynamic O-rings that allows for use of lubricants at high pressures, as well as an outer seal for greater prevention of fluid loss. Further, the packing gland component can be a retrofit for existing packing gland components to provide for greater life and efficiency as compared to the existing packing gland components. Additionally, in some implementations, a sleeve may be fixedly attached to the rotating shaft between the packing gland and the shaft to provide a wear point for the packing gland.

A portable information handling system main housing portion has a transparent cover removeably coupled at an upper surface and sealed with an inflatable seal to aid desired cooling airflow. A pump fills the inflatable seal after the transparent cover closes over the housing and deflates the inflatable seal before release of the transparent cover to an open position. In one embodiment, the transparent cover integrates a liquid crystal display that presents operating condition of processing components visible within the housing through the transparent cover.

A seal assembly for preventing the flow of fluid includes a rotating component having a first sealing surface, a stationary component coaxial with the rotating component and having a second sealing surface with the second sealing surface configured to form a seal with the first sealing surface of the rotating component, and indents in one of the first sealing surface and the second sealing surface. The indents are configured to control a width of a gap between the first sealing surface and the second sealing surface to allow fluid to flow into the gap. At least two of the indents are at least partially aligned in the radial direction.

A seal assembly for preventing the flow of fluid includes a rotating component having a first sealing surface, a stationary component coaxial with the rotating component and having a second sealing surface with the second sealing surface configured to form a seal with the first sealing surface of the rotating component, and indents in one of the first sealing surface and the second sealing surface. The indents are configured to control a width of a gap between the first sealing surface and the second sealing surface to allow fluid to flow into the gap. At least two of the indents are at least partially aligned in the radial direction.

The invention relates to a mechanical seal assembly comprising a slide ring seal (2) having a rotating slide ring (3) with a first slide surface (30) and a stationary slide ring (4) with a second slide surface (40), a sealing gap (5) being defined between the first and second slide surfaces, the stationary slide ring (4) having a through hole (42) extending from a rear side (41) of the stationary slide ring to an orifice (43) of the second slide surface (40) and a gas supply line (8) extending from a gas source to an inlet (44) of the through hole (42) at the rear side of the stationary slide ring, wherein grooves (6, 7) are formed in at least one of the sliding surfaces (30, 40), the grooves being arranged in radial direction between the orifice (43) of the through hole (42) and a radially outer outlet portion (50) of the sealing gap (5).

The invention relates to a mechanical seal assembly comprising a slide ring seal (2) having a rotating slide ring (3) with a first slide surface (30) and a stationary slide ring (4) with a second slide surface (40), a sealing gap (5) being defined between the first and second slide surfaces, the stationary slide ring (4) having a through hole (42) extending from a rear side (41) of the stationary slide ring to an orifice (43) of the second slide surface (40) and a gas supply line (8) extending from a gas source to an inlet (44) of the through hole (42) at the rear side of the stationary slide ring, wherein grooves (6, 7) are formed in at least one of the sliding surfaces (30, 40), the grooves being arranged in radial direction between the orifice (43) of the through hole (42) and a radially outer outlet portion (50) of the sealing gap (5).