Abstract: A seal assembly includes a carbon seal that has a sealing surface. A seal seat has a sealing surface and is positioned for rotation relative to the carbon seal. A diamond-like carbon coating at least partially forms the sealing surface on the seal seat.

Abstract: Systems and methods include providing an annular seal stack for an assembly. The seal stack assembly is disposed between a probe and a housing of the assembly and configured to provide a radial seal between the probe and the housing. The seal stack assembly includes a first metallic seal, a second metallic seal, and a wiper assembly disposed between the first metallic seal and the second metallic seal. The wiper assembly includes a first wiper housing component having a tapered inner surface, a second wiper housing component having a tapered inner surface opposite the tapered inner surface of the first wiper housing component, and a wiper disposed between the first wiper housing component and the second wiper housing component.

Abstract: A seal assembly configured to seal against a surface of a seal depressor includes a body member configured to elastically deform in at least a first direction of motion from an original state into a compressed state in response to experiencing a load. The body member exerts a sealing pressure against the surface of the seal depressor when in the compressed state. The seal assembly also includes one or more shape memory stiffening members constructed from a shape memory material having a high energy state and a low energy state. The one or more shape memory stiffening members are oriented perpendicular to the first direction of motion of the seal assembly and configured to stiffen the body member of the seal assembly when the shape memory material is in the high energy state.

Abstract: 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.

Abstract: 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.

Abstract: A boat shaft seal system including a flexing gland configured to receive a boat drive shaft therethrough, the flexing gland having a first end configured to receive a shaft log fitting, and a second end configured such that the boat drive shaft extends therefrom, and a plurality of circumferential ribs formed along at least a portion of a length of the flexing gland and configured to allow limited flexing of the flexing gland.

Abstract: Disclosed is a gas seal member for high-pressure hydrogen device with sufficiently reduced occurrence of both swelling destruction and blister destruction. The gas seal member is formed of a cross-linked product of an elastomer composition which comprises an elastomer and fibrous carbon nanostructures, wherein a hydrogen diffusion coefficient D1 of a cross-linked product of an elastomer component including the elastomer and a hydrogen diffusion coefficient D2 of the cross-linked product of the elastomer composition satisfy the relationship 0.7<D2/D1<1.0.

Abstract: A spiral wound header ring is provided. The spiral wound header ring comprises at least one outer fabric layer and at least one spiral of inner fabric and rubber. The spiral wound header ring further may have a sealing surface that extends from a rearward facing surface to the forward facing annular, radially extending, surface.

Abstract: A seal assembly includes a housing at least partially defining a seal opening and at least partially surrounding a rotatable shaft. A carbon seal is located at least partially in the seal opening and includes a sealing surface. The rotatable shaft includes a radially facing surface that has a carbide based coating and a diamond-like carbon coating in engagement with the sealing surface on the carbon seal.

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: The invention relates to a mechanical seal arrangement for sealing on a rotating component (21), comprising a slide ring seal (2) having a rotating slide ring (3) and a stationary slide ring (4), which define a sealing gap (5) between the sliding surfaces (3a, 4a) thereof, a recirculation conveyor (7) arranged adjacent to the rotating slide ring (3) wherein the recirculation conveyor (7) comprises a recirculation line (19) in which a cooling device (20) for cooling the recirculated fluid is arranged, a recirculation rotor (8) and a hollow cylindrical housing (9), wherein the recirculation line (19) leads to a cavity (6) in the region of the sealing gap (5) of the sliding ring seal (2), wherein the hollow cylindrical housing (9) comprises an inner shell surface (11) and an outer shell surface (12) and wherein a conveyor channel (10) is provided on the outer shell surface (12), which conveyor channel (10) is formed along the outer shell surface (12) from a start portion (13) to an end portion (14) wherein the s

Abstract: A photocurable composition is provided. A cured product formed by curing the photocurable composition has reworkability and excellent heat resistance while having flexibility. The photocurable composition includes a telechelic acrylic polymer having an acryloyl group at both ends; a polyfunctional acrylic polymer having acryloyl groups; a monofunctional acrylic monomer; and a fumed silica including at least one of a hydrophilic fumed silica or a fumed silica having a polar group. The photocurable composition has a Martens hardness of 0.07 to 0.75 N/mm2, where the Martens hardness is a hardness after the photocurable composition is cured.

Abstract: A dispensing seal includes a base seal comprised of a first material. The base seal includes at least a top surface and a bottom surface and a cavity defined therein, wherein the bottom surface includes an opening to the cavity. A second material is located within the cavity of the base seal, wherein a viscosity of the second material is less than a viscosity of the first material.

Abstract: A mechanical seal for sealing against a rotating shaft includes a static ring positioned about the shaft and a movable ring positioned about the shaft and in sliding contact with the static ring. The movable ring is rotatable with the shaft and a tray sleeve is attached to one of the movable ring and the static ring, with the tray sleeve being selectively movable in an axial direction along the shaft. Wear between the static ring and the movable ring causes the tray sleeve to move in the axial direction. The tray sleeve includes an indicator and relative movement of the indicator along the shaft is in proportion to the wear between the static ring and the movable ring.

Abstract: A high temperature secondary seal between a rotating seal face adaptor sleeve and a rotating shaft does not consume additional axial space beyond the axial space occupied by the secondary seal. The seal includes a single ring drive collar comprising a plurality of radial directed bolts in tapped holes. As the bolts are tightened they enter a cylindrical cavity in the drive collar and impact therein a sloped surface of a crush ring. The vertical force thereby applied to the crush ring displaces the crush ring axially into a secondary graphite sealing element, thereby crushing the secondary sealing element against the adaptor sleeve and shaft, and forming a seal there between. The crush ring sloped surface can terminate in a vertical face, so that upon sufficient displacement of the crush ring the bolts abut the vertical face and impact the shaft, fixing the drive collar to the shaft.

Abstract: A face seal fitting operable to join first and second conduits together and to provide a face seal, the face seal fitting comprising a body comprising a fluid passageway, and a coupling portion having an end defining a mating face; a gland comprising a fluid passageway, and an end having a mating face operable to be seated against the mating face of the body; a polyimide sealing component configured to be situated between the body and the gland; and a compression nut fittable over the gland and coupleable to the body, the compression nut being operable, upon torqueing to achieve a threshold compression load, to cause the mating face of the gland to seat against the mating face of the body, and to compress and elastically deform the polyimide sealing component to be flush with the mating faces of the body and the gland to form a face seal.

Abstract: The disclosure relates to a mechanical seal for sealing a fluid-conducting channel and/or space extending in a stationary component and/or a rotating component from the environment, having a slide ring which is supported in the axial direction against a counter ring in a sealing manner and, to compensate for wear on its front-end seal face or on a counter face, is supported against the counter ring elastically and movably in the axial direction with this seal face; having a position sensor to detect the position of the slide ring in the axial direction. The disclosure is characterized in that a temperature sensor is provided on a leakage side of the seal face facing away from the channel and/or space, which sensor at least indirectly detects a temperature which is dependent on the magnitude of a leakage flow passing from the channel and/or space via the seal face.

Abstract: Systems and methods are disclosed that include providing an outer tubular member, an inner tubular member telescopically disposed within the outer tubular member, and an annular seal disposed between the outer tubular member and the inner tubular member, the annular seal being resilient to permit relative movement between the outer tubular member and the inner tubular member, and the annular seal having in a radial cross-section: a first annular leg portion terminating at an end that is radially inward or radially outward, the first annular leg portion comprising a first open loop; and a second annular leg portion extending from the first annular leg portion and terminating at an end that is the other of radially inward or radially outward, the second annular leg portion comprising a second open loop.

Abstract: A seal assembly configured to seal against a surface of a seal depressor is disclosed. The seal assembly includes a body member configured to elastically expand from an original state into an expanded state. The body member exerts a sealing pressure against the surface of the seal depressor when in the expanded state. The seal assembly also includes one or more actuation members constructed from a shape memory material having a high energy state and a low energy state. The one or more actuation members are configured to urge the body member of the seal assembly from the original state into the expanded state when the shape memory material transitions from the low energy state to the high energy state.

Abstract: A rotary joint for connecting a stationary body to a rotating body. The rotary joint has a rotatable wear plate connectable to the rotating body and a seal ring seated in the wear plate. A spring-biased piston engages the seal ring against the wear plate by compressed springs between an end flange and the piston. The end flange and the piston are at least partially disposed within a shroud, wherein the shroud has at least one aperture extending there through. Alignment rings are formed on the piston and viewable through the aperture in the shroud to confirm the proper distance between the end flange and the piston and the proper force applied to the piston. A seal wear indicator is connected to the piston and moves between an exposed position, wherein the seal ring is not worn, and a non-exposed position, wherein the seal ring is worn.