Abstract: A split ring seal has: a first circumferential end and a second circumferential end; an inner diameter surface and an outer diameter surface; a first axial end face and a second axial end face. The outer diameter surface has a sealing surface. The first axial end face has: a first section; a second section outboard of the first section; and an axial protrusion between the first section and the second section The second axial end face has: a first sealing surface; a second sealing surface radially outboard of the first sealing surface; a circumferential channel between the first surface and the second sealing surface; and a plurality of channels extending radially outward from the circumferential channel.

Abstract: A carbon seal assembly may comprise a seal support, a seal housing coupled to the seal support, and a carbon seal adjacent an aft portion of the seal housing. The carbon seal may comprise a nose defined by an axial surface of the carbon seal, a first radial surface of the carbon seal, and a second radial surface of the carbon seal radially inward of the first radial surface. The first radial surface and the second radial surface may extend forward from the axial surface. A first axial length of the first radial surface may be greater than a second axial length of the second radial surface.

Abstract: Aspects of the disclosure are directed to an apparatus comprising a first section, and a second section coupled to the first section, wherein the second section is configured to substantially coincide with an edge of a seal and includes a pre-tapered edge.

Abstract: The present disclosure relates to sealing systems for bearing compartments. In one embodiment, a sealing system includes a runner configured to extend circumferentially around a rotating component, the runner is formed of a material with low radial thermal growth and is configured to fit to the rotating component to remove heat away from the runner. The runner can include an outer surface configured to provide passive cooling for the runner in the bearing compartment. The sealing system can also include a seal configured to operate with the runner, wherein the seal includes a clearance seal on an air side of the runner. The runner can be configured to operate without direct oil cooling.

Abstract: A seal assembly is provided that extends along an axial centerline, and includes a rotor seal element that engages with a stator seal element. The rotor seal element extends radially between an inner element side and an outer element side, and includes a channel, a plurality of first passages and a plurality of second passages. The channel extends radially into the rotor seal element from the inner element side. The first and the second passages are fluidly coupled with the channel. Each of the first passages extends radially through the rotor seal element to a respective first passage outlet. Each of the second passages extends axially through the rotor seal element to a respective second passage outlet.

Abstract: A carbon seal assembly may comprise a seal support, a seal housing coupled to the seal support, and a carbon seal adjacent an aft portion of the seal housing. The carbon seal may comprise a nose defined by an axial surface of the carbon seal, a first radial surface of the carbon seal, and a second radial surface of the carbon seal radially inward of the first radial surface. The first radial surface and the second radial surface may extend forward from the axial surface. A first axial length of the first radial surface may be greater than a second axial length of the second radial surface.

Abstract: Aspects of the disclosure are directed to a system comprising: a first seal that includes a notch configured to avoid an adjacent seal plate radius edge and a first protrusion, and a second seal that is notch-free with respect to an inner diameter sealing face and includes a second protrusion, wherein the first protrusion and the second protrusion are configured to at least partially overlap with one another in at least one of an axial direction or a radial direction with respect to an engine centerline.

Abstract: A seal assembly with an axis is provided that includes a rotor and a seal element that is connected to a stator with an anti-rotation element. The seal element includes a first element surface, a second element surface and an annular notch. The first element surface axially engages the stator. The second element surface radially engages the rotor. The notch extends into the seal element between the first and the second element surfaces. The stator radially overlaps a portion of the notch.

Abstract: A system is provided associated with an engine of an aircraft. The system includes a ring, a runner and at least one radially-oriented hole associated with the runner that is configured to supply oil to an interface between the runner and the ring. The at least one hole is contained within an axial projection of the ring.

Abstract: A system is provided associated with an engine of an aircraft. The system includes a ring, a runner and at least one radially-oriented hole associated with the runner that is configured to supply oil to an interface between the runner and the ring. The at least one hole is contained within an axial projection of the ring.

Abstract: Aspects of the disclosure are directed to an apparatus comprising a first section, and a second section coupled to the first section, wherein the second section is configured to substantially coincide with an edge of a seal and includes a pre-tapered edge.

Abstract: Aspects of the disclosure are directed to a system comprising: a first seal that includes a notch configured to avoid an adjacent seal plate radius edge and a first protrusion, and a second seal that is notch-free with respect to an inner diameter sealing face and includes a second protrusion, wherein the first protrusion and the second protrusion are configured to at least partially overlap with one another in at least one of an axial direction or a radial direction with respect to an engine centerline.

Abstract: The present disclosure relates to sealing systems for bearing compartments. In one embodiment, a sealing system includes a runner configured to extend circumferentially around a rotating component, the runner is formed of a material with low radial thermal growth and is configured to tit to the rotating component to remove heat away from the runner. The runner can include an outer surface configured to provide passive cooling for the runner in the bearing compartment. The sealing system can also include a seal configured to operate with the runner, wherein the seal includes a clearance seal on an air side of the runner. The runner can be configured to operate without direct oil cooling.

Abstract: A seal assembly with an axis is provided that includes a rotor and a seal element that is connected to a stator with an anti-rotation element. The seal element includes a first element surface, a second element surface and an annular notch. The first element surface axially engages the stator. The second element surface radially engages the rotor. The notch extends into the seal element between the first and the second element surfaces. The stator radially overlaps a portion of the notch.

Abstract: A seal assembly is provided that extends along an axial centerline, and includes a rotor seal element that engages with a stator seal element. The rotor seal element extends radially between an inner element side and an outer element side, and includes a channel, a plurality of first passages and a plurality of second passages. The channel extends radially into the rotor seal element from the inner element side. The first and the second passages are fluidly coupled with the channel. Each of the first passages extends radially through the rotor seal element to a respective first passage outlet. Each of the second passages extends axially through the rotor seal element to a respective second passage outlet.

Abstract: One embodiment of the face seal described herein includes a seal seat and a seal element carried by a seal housing. The seal element cooperates with the seal seat to establish a seal. The housing includes a seal element support and a shroud. The seal housing is made of a parent material and the shroud has a tip impregnated with a second material.

Abstract: A mechanical face seal housing includes an annular seal-receiving section, a seal force transfer section that extends axially from the annular-seal receiving section, and an annular contact section axially spaced from the seal-receiving section. An annular spring between the contact section and a support wall provides a bias force against the contact section. The contact section transfers the bias force to the seal-receiving section to provide a sealing force between a graphitic carbon ring and a rotatable seal surface.

Abstract: A mechanical face seal arrangement includes a seal member having an annular seal element for sealing against a rotatable seal surface. The seal member includes guide slots that cooperate with the guide member to establish a direction of seal member movement. The guide member includes stops to establish a range of movement of the seal member along the direction of seal member movement.

Abstract: A face seal includes a seal seat and a seal element carried by a seal housing. The seal element cooperates with the seal seat to establish a seal. The housing includes a support for the seal element and a shroud for effecting a gradual transition between a normal condition and a deteriorated condition. The shroud may have a tip whose properties differ in lubricity, hardness or abradability relative to other portions of the seal housing.

Abstract: One embodiment of the face seal described herein includes a seal seat and a seal element carried by a seal housing. The seal element cooperates with the seal seat to establish a seal. The housing includes a seal element support and a shroud. The seal housing is made of a parent material and the shroud has a tip impregnated with a second material.