An improved face seal may comprise a seal housing having an annular extrusion, and a primary seal coupled to the seal housing. The primary seal comprises a sealing face and a base opposite the sealing face, wherein the primary seal has an annular structure coaxial with the annular extrusion with the base proximate a first end of the seal housing. The sealing face comprises a disrupted surface.

A face seal member includes a cylindrical annular body defining a cylindrical axis, a radial direction, a first axial extremity, a second axial extremity, an outside radial extremity and an inside radial extremity, a face sealing surface including a clearance surface, a contact region disposed radially adjacent the clearance surface that defines a contact plane, and a tapered surface extending radially from the contact region that defines a taper angle with the contact plane that increases as the tapered surface progresses further radially from the contact region toward the inside radial extremity.

A sealing apparatus includes a sealing apparatus body and a slinger. The sealing apparatus body includes a reinforcing ring annular around an axis line, and an elastic body portion attached to the reinforcing ring and annular around the axis line. The slinger includes a flange portion extending toward an outer peripheral side and annular around the axis line. The elastic body portion includes an annular end-face lip contacting the flange portion from another side in the axis line direction. At least one groove is formed on the other side of the flange portion of the slinger. At least one circumferential-direction projection is formed on an inner peripheral surface of the end-face lip. The circumferential-direction projection extends in an annular shape around the axis line and projects between the inner peripheral surface of the end-face lip and a surface of the flange portion on the other side.

A face seal assembly for a gas turbine engine includes a seal body having a seal face defining a contact area disposed between tapered sides. The seal body defines an axial width between a back surface of the seal body and the seal face. A decrease in the axial width from wear increases the contact area. A bearing assembly and method are also disclosed.

The invention relates to a mechanical seal assembly comprising a mechanical seal with a rotating slide ring (3) and a stationary slide ring (2), wherein one of the two slide rings has a first slide surface (30), wherein the other of the two slide rings has a second slide surface (20) with a circumferentially closed sealing blade (22) which protrudes from a bottom region (21) of the second slide surface in the direction of the first slide surface (30) by a height (H), wherein the sealing blade (22) has a width (B) in a range of between 10 and 500 m, wherein at least one pre-tensioning element (4) braces the slide rings against each other, wherein the second slide surface (20) and the sealing blade (22) on the second slide surface (20) have a diamond coating, or wherein the second slide surface (20) and the sealing blade (22) on the second slide surface (20) have a coating of cubic boron nitride, and wherein an OH.sup.-ion donor (10) and or an H+ ion donor (10) is present between the first slide surface (30) and the second slide surface (20).

A seal assembly for a pump comprises a gland housing mounted to the pump casing. A staging flow pathway is defined within the gland housing with multiple seal chambers. A seal stage is positioned in each seal chamber, each having a static sealing element and a rotating sealing element, the sealing elements engaging one another to form a fluid-tight seal. A rotor assembly pumps coolant through the gland housing. Fluid passing through the staging flow pathway is accelerated by an acceleration surface of the rotor assembly. An inlet passage feeds coolant fluid into the staging flow pathway and past the acceleration surface.

In a mechanical seal, a stationary-side seal ring (20) is disposed on the high-pressure fluid side of a rotating-side seal ring (21), and fixed to a housing (1) and has sliding surfaces (20a), (20c), and (20d) supporting a rotating shaft (2) in both a radial direction and a thrust direction. The rotating-side seal ring (21) is axially movably fitted by a bellows (25) fitted on the rotating shaft (2). The rotating shaft (2) has an outer peripheral surface (2a) contacting and sliding on the radial sliding surface (20a) of the stationary-side seal ring (20) to be supported radially. Thrust rings (10a) and (10b) are provided between the stationary-side seal ring (20) and the rotating shaft (2), for supporting the rotating shaft (2) in thrust directions. The mechanical seal can eliminate the need for an additional bearing and provide stable performance as a bearing.

A face seal member includes a cylindrical annular body defining a cylindrical axis, a radial direction, a first axial extremity, a second axial extremity, an outside radial extremity and an inside radial extremity, a face sealing surface including a clearance surface, a contact region disposed radially adjacent the clearance surface that defines a contact plane, and a tapered surface extending radially from the contact region that defines a taper angle with the contact plane that increases as the tapered surface progresses further radially from the contact region toward the inside radial extremity.

A seal ring having a sealing surface (22) includes first and second portions (24, 26), and may be configured for mating with a mating ring. The first portion (24) may include a first surface roughness, the second portion (26) may include a second surface roughness, and the second surface roughness may be comparatively rougher than the first surface roughness. In embodiments, a seal assembly may include a seal ring including a first sealing surface (22), the sealing surface including first and second portions (24, 26); and a mating ring including a second sealing surface; wherein, the first portion (24) has a first surface roughness the second surface (26) includes a second surface roughness, and the second surface roughness being rougher than the first surface roughness.

The invention relates to a sealing assembly for the limitation of fluid flow along a rotatable shaft that is passed through a housing member that separates a high pressure side and a low pressure side, wherein the sealing assembly comprises: a rotor with a sealing surface which essentially extends radially in relation to the shaft, a flushing sealing system that extends between the rotor and the housing member, which sealing system is in contact with both the housing member and the sealing surface of the rotor to effect a sealing effect, wherein the flushing sealing system comprises an elastic sealing member that in use imposes a targeted compression force on the sealing surface.