Abstract: A composite, dynamic seal suitable for use in a high temperature environment and method of making same. The dynamic seal includes a resilient, generally ring-shaped seal body having a first layer formed of a first resilient sealing material and a second layer formed of a second resilient sealing material. The first and second layers are preferably molded and cured together simultaneously and chemically cross-linked to each other. The first resilient sealing material is selected for its wear resistant dynamic properties and the second resilient sealing material is selected for its compression set resistant properties. Preferably, the first resilient sealing material is tetrafluoroethylene and propylene copolymer and the second resilient sealing material is fluorocarbon rubber. The first and second resilient sealing materials have compatible cure systems, preferably peroxide cure systems.

Abstract: An sealing gasket is shown for use in forming joints of plastic pipe. The gasket has a bulbous region which is bisected by a planar region which forms a pair of oppositely extending wing-like flaps. These features of the gasket allow it to be more reliably seated on the working mandrel used to bell a female, thermoplastic pipe end. The wing-like flap portions of the gasket form wiper surfaces for a subsequently installed male, spigot pipe end as the joint is formed.

Abstract: According to one embodiment of the disclosure, an annular seal generally includes a hollow member having two ends and an inner surface. The hollow member has a number of depressions formed in and extending around its inner surface. Each of the depressions having a depth that is a function of its distance from one of the two ends.

Abstract: A locking joint seal includes a ring-shaped body made from poly tetra fluoroethylene and having a first end and a second end. The first and second ends each include mutually engageable first and second locking features. The first locking feature including a first axially extending portion overlapping a second axially extending portion of the second locking feature in an assembled condition.

Abstract: In a rod sealing system, which comprises a buffer ring, a rod seal, and a dust seal, provided successively in this order from a fluid hydraulic side toward the outside in an annular clearance between two members in reciprocating motion, the buffer ring is made up of a thermoplastic polyurethane molding product obtained by subjecting a thermoplastic polyurethane molding product prepared by reaction of (A) a high molecular weight polycarbonatediol having a number average molecular weight Mn of 500-6,000, (B) an aromatic diisocyanate, and (C) a low molecular weight diol as a chain elongation agent in an NCO/OH ratio of 0.95-1.20, to heat treatment under conditions that a glass transition point (Tg) of hard phases becomes 170° C. or higher, preferably 170-230° C., and an endothermic peak area (?H) at Tg becomes 5 J/g or more, by differential scanning calorimetry.

Abstract: A shaft seal for forming a dynamic seal along an axially extending annular running surface and method of installation thereof is provided. The shaft seal has a mounting portion configured to be connected to a stationary housing and a seal lip having an annular sealing surface extending between an oil side end and an air side end of the seal lip. The sealing surface is configured to extend axially along a shaft running surface. An annular bridge portion connects the seal lip to the mounting portion. A plurality of webs extend generally radially between the bridge portion and the mounting portion to prevent the seal lip from being inadvertently unfolded during installation or while in use. An annulus can be used to install the shaft seal into a housing and about a shaft without the need for secondary operations.

Abstract: In a sealing arrangement sealing at least one axial end section of a hollow shaft that is arranged in a cavity of a component, with the hollow shaft being adapted to route a fluid, a gasket is adapted to be located between the component and the shaft. The gasket is made with a sealing lip to adjoin the outer peripheral surface of the end section. The gasket also includes an axially projecting portion that projects axially beyond the end of the shaft. The axially projecting portion of the gasket surrounds a device for filtering the fluid and/or a device for determining the flow cross-section of the fluid.

Abstract: [PROBLEMS] A seal device where a seal lip reliably maintains shaft sealing relative to high-pressure fluid that is to be sealed and where the equivalent Mises stress occurring in the seal lip is reduced to extend the durable term of the seal lip longer. [MEANS FOR SOLVING PROBLEMS] A backup ring (2) has a tapered section (23) continuously extending from a fixation section (21) of the backup ring (2) and also has a forward end section (24). A rounded surface (E) with a curvature radius (R-1) is formed at least at a boundary (26) where a surface (D) of the tapered section (23) changes to a surface (F) of the forward end section (24). A portion of the surface (D) of the tapered surface (23), which portion is in contact with the rounded surface (E) at the boundary (26), is a projected curvature surface having a curvature radius greater than the curvature radius (R-1) of the boundary (26).

Abstract: An alignment apparatus includes a first stator, located in a stator of a piece of rotating equipment, and a second stator couplingly connected to the first stator and able to be angularly rotated relative to the first stator. The second stator can seal an interface between a shaft and housing in the piece of rotating equipment. The alignment apparatus permits angular misalignment between a stator, a housing and a rotor shaft, and may be used, for example, in a bearing protector or an isolator installed on a Pillow Box.

Abstract: A seal assembly is configured to seal a tile gap between a pair of tiles. Each of the tiles may include a tile side surface. At least one of the tiles may include a groove which may be formed along a length of the tile side surface. The seal assembly may comprise a gasket assembly including first and second bulb portions which may be interconnected by a web. A spacer rope may be positionable along the web. The gasket assembly may define a folded configuration for mounting within the tile gap when the web is wrapped around the spacer rope such that the second bulb portion is positioned between the spacer rope and the first bulb portion. The second bulb portion may be receivable within the groove.

Abstract: The invention relates to the external sealing and joining of piping. More particularly, the invention provides an improved seal profile which is suitable for use inside pipe couplings. The invention provides a twin-lip seal profile particularly useful in combination with a pipe coupling, the seal comprising: a substantially flat base element, having a first (inner) face and a second (outer) face and two outer edges. Two spaced-apart support blocks projecting upwardly from the first face of the base element, each support block having an outer and an inner face. Two lip members projecting from the outer edges of the base element, the lip members overlapping and resting on the closest support block and leaving a hollow space between the base element, the lip member and the outer face of the support block.

Abstract: A non-contacting rotary face seal assembly includes a first sealing member, including a first sealing face and a first magnetic element; and a second sealing member, including a second sealing face and a second magnetic element. The first and second magnetic elements of the first and second sealing members provide a magnetic repulsion force between the first and second magnetic elements such that the magnetic repulsion force separates the first and second sealing faces before hydrodynamic or hydrostatic forces associated with rotation of the second sealing member become sufficient to prevent the first and second sealing faces from contacting.

Abstract: A rotating assembly of a mechanical seal includes a retainer, a pair of compression rings, a shaft sleeve, a first rotating seal ring and a second rotating seal ring. The retainer includes a plurality of spring members and a plurality of slide legs longitudinally extended in opposite directions to define limiting spaces where the compression rings are correspondingly restricted. The compression rings are located at opposite sides of the retainer between which the spring members are arranged. In assembling, the retainer, the compression rings, the first rotating seal ring and the second rotating seal ring are assembled on the shaft sleeve. Spring forces of the spring members can actuate the compression rings to push the first rotating seal ring and the second rotating seal ring in the opposite directions.

Abstract: An axle boot for joint sealing, in particular on the drive train of motor vehicles, includes a substantially axisymmetric bellows, which is designed as a single piece with a connecting collar. The connecting collar has a plurality of indentations projecting towards the inside that are adapted to radial recesses in the external contour of the joint housing. To the outside of the connecting collar are attached compensating pieces that complete the external contour, forming a cylindrical circumferential surface on which a clamp is located.

Abstract: The present invention relates to compositions and methods for creating insulating seals for use in a variety of applications, and to seals created by such compositions and methods. In particular, the present invention provides novel compositions and methods for creating insulating edge seals that provide multiple contact surfaces. The present invention further provides seals that facilitate attachment of flexible covering materials (such as fabrics, plastics, metals, etc.) to hard surfaces (such as plastics, metals, woods, etc.). The present invention is particularly useful for creating insulating edge seals that provide a means of attachment for removable covers for vehicles (such as tops for automobiles, watercraft, and aircraft), structures, and objects.

Abstract: A brush sealing system includes a plurality of bristles, each having a first end coupled to a holding device and a second end protruding outwards from the holding device. One or more shims are disposed between the first end of each of the bristles and the holding device; wherein the shims are configured to controlling a pinch point diameter of the bristles.

Abstract: In a shaft sealing mechanism which prevents fluid from flowing in an axial direction of a rotor through an annular gap between the rotor and a stator, there are provided a high pressure side plate positioned on a high pressure side region of a plurality of sheets, and a low pressure side plate positioned on a low pressure side region of the plurality of sheets, and construction is such that in a state in which the plurality of sheets is fixed on a stator side, and when under gas pressure, the sheets make contact with each other.

Abstract: A floating seal is provided between the fixed housing and the drive wheel, and an outside seal is provided so as to cover the outer circumference of the floating seal. The outside seal is composed of a gap between the fixed seal member secured to the fixed housing serving as a vehicle body and the rotating seal member rotatably secured integrally with the drive wheel. Blades that rotate on the outer circumference of the outside seal are provided on the outer circumference of the rotating seal member so as to protrude therefrom. By means of the blades, dirt accumulated in the fixed housing is scraped off. Therefore, dirt is prevented from being accumulated on the outer circumference of the outside seal, wherein it is possible to prevent dirt from entering the position of the floating seal and to appropriately discharge the dirt that has entered to the outside.

Abstract: Gas turbine engine seals and engines incorporating such seals are provided. In this regard, a representative seal includes: an annular seal body having an inner diameter and an outer diameter, the seal body extending along an axis of symmetry between a first end and a second end; the seal body being formed of a strip of material having first and second opposing edges, the strip of material being deformed to exhibit a first sealing surface at the first end, a second sealing surface at the second end, and a third sealing surface along the inner diameter, the first edge being located adjacent to the third sealing surface, the second edge being located adjacent to the second sealing surface; the first edge being spaced from the second edge to define an annular opening, the annular opening providing access to an annular cavity of the seal body.

Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.