Abstract: A seal includes a sealing ring constructed with a first portion folded over a second portion so as to define at least one inner annular space bounded by the first and second portions. At least one hollow portion is at least partially annular, and is formed in the sealing ring in at least one of the first portion and the second portion.

Abstract: A sealing arrangement is disclosed. In one example, the sealing arrangement includes a composite seal ring that includes a seal ring shell and a seal insert, an outer housing, at least one spring, and a welded bellows. The welded bellows can have a fixed end and an opposite free end. The fixed end can be welded to one of the seal ring shell and the outer housing, and the free end can make a non-welded contact seal with the other one of the seal ring shell and the outer housing.

Abstract: A dry gas mechanical seal system configured to inhibit the emission of process gas. The mechanical seal system having tandem first and second stage seals, and a single separation gas supply subsystem configured to direct a supply of separation gas from an inlet through interfacing portions of the first stage seal into a process cavity and from the inlet through the interfacing portions of the second stage seal and out through an outlet to the atmosphere, thereby inhibiting the emission of process gas between a compressor housing and a rotating compressor shaft.

Abstract: Provided are an oil ring for an internal combustion engine and a piston assembly including the same, in which the oil ring for an internal combustion engine includes: a compression portion protruding from an upper portion of a body, in close contact with a cylinder inner wall and effectively limiting explosive gas generated in a combustion chamber; a scraper portion protruding from a lower portion of the body, in close contact with the cylinder inner wall and including a nose scraping off oil oversupplied to cylinder inner wall; and an oil suction portion being a space formed between the compression portion and the scraper portion to collect and discharge the oil oversupplied to cylinder inner wall, thereby reducing leakage of high-temperature and high-pressure gas generated in the combustion chamber, and preventing incomplete combustion caused by oil leaked into the combustion chamber.

Abstract: A seal member includes a bottom portion, a first side wall portion, a second side wall portion, and an outer wall portion. At least one of the first side wall portion and the second side wall portion is provided to be outwardly widened from the bottom portion toward the outer wall portion with respect to a virtual plane perpendicular to an axis. The outer wall portion has a recessed portion recessed toward a bottom portion side, between the first side wall portion and the second side wall portion, and the outer wall portion forms a first lip region in a region including the first side wall portion, and forms a second lip region in a region including the second side wall portion, with the recessed portion being sandwiched therebetween.

Abstract: A gasket is disclosed for use as an environmental seal between a first aircraft part having planer surface and a second aircraft part having a planer surface, the two planer parts spread apart and engaged with fasteners. The gasket, in some embodiments, is compressible between the planer surfaces. The gasket, in some embodiments, comprises a first tabular portion having tabular portion properties and having a first tabular thickness and a length and a width, the length and width much greater than the first tabular thickness; and a second tabular portion having tabular portion properties having a second tabular thickness, a length and width, the length and width much greater than the second tabular thickness; and a tabular skeleton. The first and second tabular portions and the skeleton are positioned parallel to one another. The skeleton is at least partly contacting one of the tabular portions. The first tabular portion and the second tabular portion differ in at least one tabular portion property.

Abstract: A mechanical seal capable of eliminating the need for an elastic body includes a metallic sleeve 120 fixed to a rotary shaft 500 and a metallic rotary ring 110 fixed to the sleeve 120. A metallic cartridge 220 is fixed to a housing 600. A metallic fixed ring 210 is configured to slide on an end surface of the rotary ring 110. A metallic bellows 230 presses the fixed ring 210 toward the rotary ring 110, wherein the rotary ring 110 and the sleeve 120 are connected to each other by an annular first connecting part, whereby a radially inner side region and a radially outer side region are separated from each other, one end of the bellows 230 and the fixed ring 210 are connected to each other by an annular second connecting part.

Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.

Abstract: A bearing isolator capable of operating under flooded conditions is disclosed. The bearing isolator can include a stator, a rotor, a unitizing element and a sealing element, the stator and rotor form a cavity in which the unitizing element is disposed, and features of the unitizing element with features of the stator and rotor to ensure the stator and rotor stay together while still maintaining a gap between the two components to avoid metal on metal contact. The sealing element resides against a surface of the stator and includes a radially-inward extending lip seal that rides against a running surface of the rotor for improved sealing.

Abstract: A coupled pipe joint assembly includes a first pipe element defining a first end; a second pipe element defining a second end, the first end and the second end positioned together in an end-to-end facing relationship; and a coupling, the coupling including at least one segment, each segment defining a first end and a second end, the first end disposed opposite from the second end, each first end and each second end defining a fastener hole; at least one fastener, each fastener extending through at least a one of the fastener holes; and a gasket, each segment positioned annular to the gasket, the gasket including an annular body; a pair of sealing ribs each extending substantially radially inwardly from the annular body, and at least one center rib extending substantially radially inwardly from the annular body.

Abstract: A gasket assembly includes a gasket body, an adhesive-backed film, and a plurality of grommets. The gasket body includes a first face, and the adhesive-backed film includes a sticky face bonded to the first face of the gasket body. The grommets are bonded to the sticky face of the adhesive-backed film.

Abstract: An oil control ring according the present disclosure includes a pair of side rails, and a spacer expander disposed between the pair of side rails. The spacer expander includes a plurality of sets and each set includes a lug part and a rail facing part. For each set, the lug part is in contact with an inner circumferential surface of either of the pair of the side rails, and the rail facing part is provided adjacent to the lug part and faces a side surface of either of the pair of the side rails. The lug part satisfies a following condition (1): W/H?1.5??(1) In condition (1), W indicates a width of the lug part at a position 0.05 mm away from a highest position of the lug part in a direction towards the rail facing part, and H indicates a height difference between a highest position of a region on the rail facing part adjacent to the lug part and the highest position of the lug part.

Abstract: A gasket is configured to be mounted in a gasket mounting groove that opens to the radially inside of a mounting member provided with a hydraulic passage, and is provided with a back-side hydraulic passage serving as a gap on its groove bottom surface. The gasket includes a gasket body with a reinforcement ring buried therein and a flange provided to extend from one axial end of the gasket body toward the radially outside. The gasket also includes a one-end-side seal lip that is provided to extend from the one axial end of the gasket body toward one side in an axial direction and the radially inside, and is configured to come in contact with one axial side surface of the gasket mounting groove when the gasket body is mounted.

Abstract: Low-torque sliding components have sliding surfaces rotated relative to each other with an annular mating ring and an annular seal ring facing each other. The sliding surface of at least one of the mating ring and the seal ring has therein a plurality of multi-stepped recess portions formed in a circumferential direction. Relative rotation and sliding of the mating ring and the seal ring causes the multi-stepped recess portions to generate a dynamic pressure, and the multi-stepped recess portion is formed in a stepwise shape in a cross-sectional view by a dynamic pressure recess portion and a static pressure recess portion with the dynamic pressure recess portion surrounding the static pressure recess portion deeper than the dynamic pressure recess portion.

Abstract: A structure for mounting a gasket on a block includes a block with a fluid channel and an annular gasket surrounding an opening of the fluid channel. The block has an annular inner wall and an annular outer wall. The annular inner wall is made of resin and located radially outside the opening of the fluid channel. The annular outer wall is made of resin and located radially outside the annular inner wall. The annular inner wall and the annular outer wall allow an axial side of the gasket to be press-fitted therebetween and are elastically deformable in their radial directions.

Abstract: A sealing bellows for a ball joint having a housing-side sealing area, a stud-side sealing area, and an outlet opening arranged between the sealing areas and which penetrates a wall of the sealing bellows. The outlet opening is open in the unassembled state of the sealing bellows. The outlet opening is closed in the assembled state of a ball joint. The sealing bellows and/or the ball joint can be used for a multi-point link, particularly a two-point link.

Abstract: A contamination guard for a machine is disclosed herein. The contamination guard includes an inner ring, a first annulus, a second annulus, and an impeller. The impeller is configured to promote intake of nearby air with contamination. The first annulus and second annulus form a passage that is configured to sling away air with contamination during operation of the machine.

Abstract: A sealing device seals a gap between a housing and a rotational shaft located in a shaft hole provided in the housing. The sealing device includes: a mounted part that is to be mounted on the shaft hole; an inner annular part; a seal lip that is to be in contact with the outer peripheral surface of the rotational shaft; a bellows part connecting the mounted part with the inner annular part; a sound insulation ring fixed to the mounted part; and a circular annular sound insulation lip projecting from the inner annular part or the bellows part toward the sound insulation ring. The sound insulation lip protrudes obliquely radially outward. The sound insulation ring includes a circular annular part with which the distal end of the sound insulation lip is in contact.

Abstract: The invention relates to a seal for a clothes dryer adapted to be interposed between a first part and a second part of the dryer. The seal comprises a first portion adapted to be connected to the first part of the dryer and a second portion adapted to be placed in contact with the second part of the dryer. The second portion comprises an at least partially curved stretch and such an at least partially curved stretch comprises a flocked surface layer adapted to be placed in contact with said second part of the dryer.

Abstract: Exemplary embodiments are directed to a seal apparatus for sealing an opening of a structure having a thickness at the opening. The seal apparatus includes a first section disposed at a proximal end, a second section disposed at a distal end, and an intermediate section disposed between the first and second sections. The first section defines a cone-like configuration. An opening extends through the first section, the second section, and the intermediate section.