Abstract: A seal is disclosed having a pair of side walls, a base extending between the side walls, a first concave surface extending inwardly from one of the side walls, a second concave surface extending inwardly from the other side wall, and a convex surface extending between the first concave and second concave surface to form a rounded peak having an apex. The seal has a seal width defined between the seal side walls, and a seal height defined between the apex of the rounded peak and the base. The width is at least twice the height of the seal. The seal is located in a channel recess of a first component opposite a second component to seal between the first component and the second component, the channel recess having a floor and a height defined between the floor and a surface of the first component in which the channel recess is formed.

Abstract: The disclosure provides a sealing system applicable for an ocean power generation device, which includes at least one first seal and a water leakage protection device. The water leakage protection device is located at a side of at least one first seal away from seawater, and includes a sealed water storage tank and a drain pipe. The sealed water storage tank collects and stores seawater leaked from the at least one first seal. One end of the drain pipe is communicated with the sealed water storage tank, and the seawater stored in the sealed water storage tank is discharged through the drain pipe.

Abstract: The present disclosure relates to a rear view device for a vehicle with one or more gaskets preventing water or other contaminants from entering the device between components, while allowing the components to move in relation to one another. In embodiments, the rear view device comprises a base adapted to be mounted to a side of the vehicle, a head for supporting at least one means for providing a rearward field of view disposed at a second attachment end of the base, an actuator connected to the second end of the base, and a shroud attached to the actuator, wherein the actuator may rotate the head in relation to the base. In embodiment, a foot gasket is attached to a foot of the base and includes a first lip portion that extends towards the shroud in a vertical direction, and a second soft lip portion that contacts the shroud in a horizontal direction.

Abstract: A valve device includes: a housing; a valve element; a rotatable shaft that rotates the valve element; a seal member that is slidably in close contact with an outer peripheral surface of the rotatable shaft to limit penetration of gas through a gap between the rotatable shaft and the housing; and a mounting ring that is shaped in a ring form and mounts the seal member to the housing. The mounting ring has: a ring portion, a one-side plate portion and an opposite-side plate portion which are formed from a single continuous plate material. The one-side plate portion and the opposite-side plate portion clamp the seal member therebetween and are joined together through the ring portion.

Abstract: Disclosed is a hermetically sealed assembly for precompression of a martinsetic metal for use in negative pressure energy transfer systems, and method of making same. The assembly comprising a martinsetic metal disposed between and in contact with flanged sapphire windows, the flanges defining an open area therebetween to accommodate expansion and contraction of the martinsetic metal. Hermetic sealing means include a bellows element, which can comprise a convoluted cross section, at the periphery of the assembly to enable operation over temperature ranges from ambient to cryogenic without loss of integrity or leakage.

Abstract: A method for assembling a seal cartridge and a seal cartridge, wherein the seal cartridge includes a set of sealing components configured for being removably assembled to each other so as to form the seal cartridge and wherein at least one of said sealing components is configured for being secured to another sealing component and/or to a shaft casing by a tenon and mortise joint system.

Abstract: Seal assemblies for sealing between a stationary component and a rotating component include a sealing member having a sealing face with an outer diameter sealing face and an inner diameter sealing face. An annular channel is defined in the sealing face between the outer diameter sealing face and an inner diameter sealing face and the sealing member is attached to the stationary component. A rotating mating ring is attached to the rotating component and includes a rotating sealing face and at least one ejection hole extending through the rotating mating ring from the rotating sealing face at an inlet end and a radially outward outlet end.

Abstract: Provided is a sliding component capable of reliably generating a negative pressure in a shallow groove regardless of a relative rotation speed of the other sliding component. In an annular sliding component disposed at a relatively rotating position of a rotating machine and sliding relative to the other sliding component, a sliding surface of the sliding component is provided with a shallow groove extending in a circumferential direction and generating a negative pressure and a deep groove collecting a sealing target fluid in the shallow groove and deeper than the shallow groove. The shallow groove has a terminating end portion in which a cross-sectional are of a flow path thereof becomes narrow toward the deep groove.

Abstract: A fluid processing machine that operates on a process fluid may include a frame that structurally supports at least a portion of the fluid processing machine and a shaft that operatively rotates about an axis and relative to the frame. The shaft may include a projection in a radial direction relative to the axis that is operationally contacted by a sealing armature that has an axial degree of freedom relative to the axis. Additionally, the fluid processing machine may include a dynamic rotational seal between the projection and the sealing armature and a dynamic axial seal between the sealing armature and the frame. The dynamic axial seal may include one or more metallic seals that seal between the sealing armature and the frame circumferentially about the axis.

Abstract: A coupling device attaches a sealing device to a panel. The sealing device seals a gap between the panel and a rotational shaft located in a shaft hole provided in the panel. The coupling device includes: a supporting wall part formed with a through hole into which the sealing device is to be inserted; multiple sealing-device hooks located on a first surface side of the supporting wall part and located around the through hole, the sealing-device hooks for being hooked on the sealing device from the outside; and multiple panel hooks located on a second surface side of the supporting wall part and located around the through hole, the panel hooks for being inserted into the shaft hole of the panel and to be hooked on a periphery of the shaft hole of the panel from the inside.

Abstract: A strain wave gearing is provided with a lubricant sealing structure that prevents a lubricant from leaking to the outside through a gap between a hollow input shaft and an end plate. The lubricant sealing structure is provided with a labyrinth seal that seals the gap. The labyrinth seal is configured by a plurality of gap portions defined by an oil-repellent surface in which fine grooves are formed in a prescribed groove array pattern. The oil-repellent surface is also formed at an outer peripheral surface portion on an upstream side of the labyrinth seal. Leakage of a lubricant oil to outside of the device can be reliably prevented through the oil-repellent effect of the oil-repellent surface at the upstream side, the sealing effect of the labyrinth seal, and the oil-repellent effect from the oil-repellent surface of the labyrinth seal.

Abstract: A mechanical seal of the cartridge type. A rotary subassembly including a sleeve, the sleeve packed against and adapted to be in sealing disposition with a pump shaft of a pump; a stationary subassembly for attachment to a stuffing box of the pump, the stationary subassembly including a gland, wherein the gland has a front face and back face; and, a register defined within the gland front face, the register being an opening shaped to fit over a raised face of the stuffing box, thereby limiting side loading of the seal. In addition, a composite setting piece press-fitted into a bore between the bushing section and the drive collar, thereby allowing the seal to be preset in lieu of a screw or clip.

Abstract: A seal assembly is for sealing between an outer member and an inner member, one of which is rotatable about a central axis. An outer annular case is coupled with the outer member and an inner annular case is disposed within and spaced radially inwardly from the outer case. An annular sealing member is disposed within and coupled with the inner case, the sealing member having a centerline coaxial with the central axis and a sealing lip or lips engaged with the inner member. An annular elastomeric coupler has a first axial end attached to the outer case and a second axial end attached to the inner case. The elastomeric coupler is radially deflectable such that the outer case or inner case is radially displaceable relative to the other one of the two cases while the centerline of the sealing member remains coaxial with the central axis.

Abstract: A seal packing assembly for a hydraulic pump includes a plurality of annular dynamic seals disposed within annular grooves circumferentially defined in the annular bore, a packing gland circumferentially housing a section of the plunger, and a plurality of seal manifolds distributed and defined within the packing gland, each seal manifold defining a port at one end exposed to the pumping fluid and further defining a clean lubrication fluid inlet proximate to a second end, the fluid inlet coupled to a lube pump via a check valve, where the clean lubrication fluid housed in the seal manifolds is maintained at a constant pressure.

Abstract: An annular seal member comprising a seal body comprising a locating portion locatable against a wall element of an offshore structure, an inner surface, an outer surface and a lip portion that defines an open mouth of the seal member for receiving an elongate element therethrough; wherein the seal body is locatable against the wall element such that when a static pressure acting on the outer surface of the seal body exceeds a static pressure acting on the inner surface of the seal body a net positive pressure is exerted on the outer surface which at least partly deforms inwardly to provide a portion of the seal body for sealing against an outer surface of the elongate element. An offshore structure.

Abstract: A rotary seal comprises includes a first annular element, a second annular element and a seal element. The first annular element has a first axially extending flange and a first radially extending flange extending radially from a proximal end of the first axially extending flange. The second annular element has a second axially extending flange and a second radially extending flange extending radially from a proximal end of the second axially extending flange in the same direction as the first radially extending flange. The second annular element is fixed to the first annular element, the second axially-extending flange being received radially on the first axially-extending flange. The second radially extending flange is spaced axially from the first radially extending flange to define a pocket therebetween.

Abstract: A seal device (3) for a rotating shaft (1). The seal device has a shaft seal (4) and a collecting device (5) for the contactless removal of leakage, that penetrates through the shaft seal (4), from the shaft (1). Further, an electric machine has a rotor shaft (1) that can be driven in rotation and a seal device (3) of the type for sealing the rotor shaft (1) and, therefore, also an inside space of the electric machine. Additionally, a drive device for the electrical driving of a motor vehicle that has an electric machine of the type for the provision of a drive power of the drive device.

Abstract: A seal assembly including: a collar having an opening configured to receive a rotatable shaft, an annular member having an annular opening configured to receive the collar, and first and second end plates fixedly coupled to a respective one of the first and second end surfaces of the collar. An outer surface of the collar includes one or more helical threads. The collar has a first axial length defined between first and second end surfaces of the collar, and the annular member has a second axial length defined between first and second end surfaces of the annular member, in which the second axial length is less than the first axial length. Also provided are an assembly comprising a seal assembly in accordance with the present disclosure and a method for preventing contamination of a sealed chamber.

Abstract: An outer peripheral surface of a piston ring has a cut surface provided to form a cutout portion between an outer peripheral end portion and a lower surface, the cut surface includes a curved concave surface, an inclination angle of a tangent of the curved concave surface at a point closest to the combustion chamber side on the curved concave surface, with respect to a first virtual line extending in parallel to the lower surface is equal to or greater than 5° and equal to or less than 50°, and in a case where an axial direction width of the piston ring is set as h1, and an axial direction width of the cut surface is set as H, H/h1 is equal to or greater than 0.2 and equal to or less than 0.4.

Abstract: A mechanical seal includes: a mating ring; a seal ring; a casing which includes a pop-out regulation portion supporting the seal ring not to be rotatable and to be axially movable and coming into contact with the seal ring to regulate the seal ring from popping out toward the mating ring; an urging member disposed between the seal ring and a back wall of the casing axially overlapping with the seal ring and axially urges the seal ring toward the mating ring; and an annular secondary seal sealing a gap between the casing and the seal ring. The casing includes a regulation wall which regulates the secondary seal from moving toward the side opposite to the mating ring and an axial dimension between the seal ring and the regulation wall is equal to or less than a half of an axial dimension of the secondary seal while the seal ring and the pop-out regulation portion are in contact with each other.