Abstract: A hydrostatic seal configured to be disposed between relatively rotatable components. The seal includes a base. The seal also includes a shoe operatively coupled to the base and extending axially from a forward end to an aft end to define an axial length.

Abstract: A hydrostatic seal configured to be disposed between relatively rotatable components. The seal includes a base. The seal also includes a seal housing. The seal further includes a shoe operatively coupled to the base and extending axially from a forward end to an aft end. The seal yet further includes a plurality of teeth extending radially from a sealing surface of the shoe, one of the teeth being a longest tooth that extends furthest radially from the sealing surface, the axial distance from the forward end of the shoe to the longest tooth being greater than a radial distance from a radial tooth tip to the sealing surface.

Abstract: A compression piston ring is provided, in particular a piston ring suitable as a second piston ring in a three-ring piston ring set, which piston ring has convex sections and concave sections alternating in the circumferential direction in a middle running face region in relation to the axial height, wherein the concave sections form profile recesses in the convexly crowned running face.

Abstract: A seal assembly for a bearing compartment of a gas turbine engine includes a seal carrier, a seal element, a seal plate, and a trough. At least a portion of the seal element is within the seal carrier. The seal plate is in contact with the seal element and is configured to rotate relative to the seal element. The trough extends around the seal plate and comprises an annular channel positioned to capture oil slung from the seal plate.

Abstract: A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes an annular attaching portion that has a first slope at an axial end. The fluid device includes an annular attached portion with a second slope that contacts the first slope. The first slope at least partially includes a contact area that contacts the second slope to seal a gap between the first slope and the second slope. The contact area has an annular bulge protruding toward the second slope in contrast to other portions of the first slope so that the bulge is the earliest contact portion with the second slope when the contact area is brought into contact with the second slope.

Abstract: A method of forming a seal plate for sealing between two components of an assembly includes forming a plate element from a first material, the plate element including at least one seal groove receptive of a seal element and forming a seal element from a second material different from the first material by one or more additive manufacturing processes, the second material an elastomeric material of a selected durometer. The seal element is affixed to the plate element at the seal groove. A seal plate includes a plate element having one or more seal grooves receptive of a seal element, the plate element formed from a first material. A seal element is installed into the seal groove, the seal element formed from a second material different from the first material by one or more additive manufacturing processes, the second material an elastomeric material of a selected durometer.

Abstract: An inner fixed structure (IFS) seal arrangement may comprise an IFS comprising an inner skin, and outer skin, and a cellular core located between the inner skin and the outer skin, an IFS seal, a seal retainer configured to retain the IFS seal, and a cooling flow channel disposed between the outer skin and the seal retainer.

Abstract: A secondary seal support template gauge, for determining whether a secondary seal support 50 is distorted, includes a plate, rectangular downward projections, and a rectangular finger. The plate has a first end and a second end, and has apertures that correspond to protruding screws of the secondary seal support. There are preferably two pairs of rectangular downward projections attached to the plate. The two pairs of rectangular downward projections are juxtapositioned such that, in operation, each pair of rectangular downward projections grip the secondary seal support and center the template gauge on the secondary seal support and each protruding screw enters an aperture when the secondary seal support is undistorted. The rectangular finger disposed on the second end of the plate such that, in operation, the finger can enter the support slot when the secondary seal support is undistorted.

Abstract: A connector for connecting at least a first hose having a globally cylindrical wall and a second hose with each other, the connector includes at least one spigot including at least a first end configured to be connected to the second hose, and a second end configured to be connected to the first hose, the spigot allowing an hermetic fluidic connection between the first hose and the second hose, wherein the connector further includes at least one compression element being slidably movable between the first end and the second end of the spigot, the compression element being in a locking position wherein the compression element resists a compression force on the first hose at the level of the second end of spigot, in order to secure the fluidic connection.

Abstract: A method of manufacturing a hydrostatic advanced low leakage seal configured to be disposed between relatively rotatable components is provided. The method includes manufacturing a plurality of separate, independent components of the seal. The method also includes assembling the plurality of separate, independent components to form the seal.

Abstract: Sealing assemblies are described herein useful for high temperature applications, as well as applications involving aggressive chemical reactants, byproducts and/or reaction environments. The assemblies include an outer ring having an interior surface having two inwardly extending projections defining a seal receiving area, an inner ring having an exterior surface having two outwardly extending projections defining a seal receiving area; and a center sealing ring configured to be positioned within the seal receiving areas of the outer ring and the inner ring. When the sealing assembly is installed in a high temperature application, the elastomeric center sealing ring is enclosed within the outer and the inner rings so as to protect the center sealing ring while allowing for thermal expansion of the center sealing ring. In further embodiments, bonded sealing ring bodies are disclosed as well.

Abstract: A sealing device may comprise: a flange that extends perpendicularly relative to a central axis of first portion; an inner cylindrical portion having an engaging surface, and a protruding portion extending between the flange and the inner cylindrical portion; a rigid body component; and an elastic component having a main oil lip and an excluder lip, wherein the main oil lip is proximate to or in contact with the flange at a first location, and wherein a the excluder lip contacts the inner cylindrical portion; wherein a gap is defined by surfaces of the first portion and the elastic component between the first location and the second location, and wherein, when the sealing device is installed in a bore so that the engaging surface is fixedly connected to the shaft and a machine is operated so that the shaft rotates, the volume of the gap changes by less than 10%.

Abstract: A seal comprising a jacket comprising an annular body defining a central axis and a recess extending into the annular body concentric to the central axis, wherein the jacket comprises at least 30 wt % of a PTFE and at least 10 wt % of a filler material, and wherein the filler material comprises a boron-containing material, a nitrogen-containing material, a titanium-containing material, a silicon-containing material, a carbon fiber, a glass fiber, or a combination thereof; and an energizing element disposed in the recess.

Abstract: A cylinder head gasket to be mounted between a cylinder block and a cylinder head of an engine includes: at least one bore-hole plate having a bore hole which corresponds to a cylinder bore of the cylinder block; and a main plate disposed so as to surround the bore-hole plate, wherein the bore-hole plate and the main plate are separated from each other without being in contact with each other, while being connected with each other with a heat insulating member interposed between the bore-hole plate and the main plate.

Abstract: There is disclosed a brush seal assembly including at least one annular bristle pack. The at least one annular bristle pack extends circumferentially around a central axis of the brush seal assembly. The at least one annular bristle pack has bristles extending along longitudinal axes from roots to free tips. The bristles extend toward a cylindrical plane of a the seal land. Projections of the free tips on the cylindrical plane define a bristle tip projection surface being non-axisymmetric. A method of operating a brush seal assembly is also disclosed.

Abstract: A ringset is configured to be arranged on a piston for sealing a gas in a high-pressure region of a cylinder in the absence of oil or other liquid lubricant. The ringset includes one or more rings made from a high-strength material as a sealing element. The ringset also includes a solid lubricant applicator configured to provide lubrication between the one or more rings and a bore of the cylinder. For example, the ring can support pressure loads from high-pressure gas without breaking, while the applicator need not act as a seal. As the piston reciprocates in the bore, the applicator slides against the bore and applies solid lubricant material to the bore, resulting in a solid lubricant film on the bore against which the sealing element may slide. The applicator includes a material such as a graphite, a polymer, or other suitable solid lubricant.

Abstract: A seal assembly can accommodate deflection between two components through a cartridge that is slidingly engaged with a slide plate.

Abstract: A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes an annular attaching portion that has a first slope at an axial end. The fluid device includes an annular attached portion with a second slope that contacts the first slope. The first slope at least partially includes two or more pressing areas, which are partitioned by annular steps. The second slope at least partially includes two or more pressed areas, which are partitioned by annular steps to fit the steps between the pressing areas.

Abstract: A blowout preventer (BOP) and a seal anti-extrusion apparatus is provided for well control about a tubular such as a polish rod. Each of opposing ram blocks support a semi-circular primary seal and at least one downstream backup ring. An extrusion gap is formed between the ram block and the rod. The backup ring has profile that is axially compressible by the primary seal when activated, causing an inner diameter diminish, and closing the extrusion gap for improved sealing integrity of the primary seal.

Abstract: New methods and devices are described that are aimed at preventing the outbreak of fire in a hydraulic rotor brake. These methods and devices can be used in the rotor brake of a helicopter and comprise a first and second seal, with a drain groove positioned in between these two seals to drain leaked fluid away from the hot parts of the brake. In the brakes described, the second seal is positioned closer to the heat sink of the brake than the first seal. The drain groove is also connected via a channel or channels to a drain outlet or outlets.