Abstract: In some implementations, a bushing may include a cylindrical body having an at least partially annular configuration. The cylindrical body may define a radial axis and may include an inner circumferential surface, an outer circumferential surface, a first end, and a second end. The inner circumferential surface may be configured to rotatably receive an outer surface of a pin of a track link joint. The outer circumferential surface may be configured to be rotatably received within a first counterbore of a first track link of the track link joint. The bushing may include at least one groove extending radially into the outer circumferential surface around the radial axis. The at least one groove may be configured to receive a first seal of the track link joint. The first seal may form a first radial seal between the outer circumferential surface and a first inner surface of the first counterbore.

Abstract: In some implementations, a bushing may include a cylindrical body having an at least partially annular configuration. The cylindrical body may define a radial axis and may include an inner circumferential surface, an outer circumferential surface, a first end, and a second end. The inner circumferential surface may be configured to rotatably receive an outer surface of a pin of a track link joint. The outer circumferential surface may be configured to be rotatably received within a first counterbore of a first track link of the track link joint. The bushing may include at least one groove extending radially into the outer circumferential surface around the radial axis. The at least one groove may be configured to receive a first seal of the track link joint. The first seal may form a first radial seal between the outer circumferential surface and a first inner surface of the first counterbore.

Abstract: A seal includes an annular body defining a radial direction, an axial direction, and a circumferential direction; and further defines a cross-sectional area including a perimeter. The perimeter may comprise a first axial extremity, a second axial extremity, an outer radial extremity, and an inner radial extremity. The perimeter may include a first axial extremity defining surface and a second axial extremity defining surface, a first concave arcuate surface interposed between the inner radial extremity and the second axial extremity, and a second concave arcuate surface interposed between the outer radial extremity and the second axial extremity.

Abstract: A track chain assembly includes a first track pad including a first pair of lugs defining a gap therebetween, and a second track pad including an intermediate lug disposed in the gap. The first pair of lugs and the intermediate lug each define a concentric bore, defining an axis of rotation for a pinned joint of the track chain assembly, and the concentric bore of one of the first pair of lugs is in communication with the gap with a first blend disposed axially between the gap and the concentric bore.

Abstract: A sealing comprises a seal portion and a plate portion fixed to the seal portion. The seal portion can have an undulating configuration of at least one peak and at least one valley, and the plate portion can circumferentially surround the seal portion. The seal portion can be made of a first material and the plate portion can be made of a second material more rigid than the first material. The seal portion can have a radially inward facing contact surface that defines a central opening of the sealing.

Abstract: A sealing comprises a seal portion and a plate portion fixed to the seal portion. The seal portion can have an undulating configuration of at least one peak and at least one valley, and the plate portion can circumferentially surround the seal portion. The seal portion can be made of a first material and the plate portion can be made of a second material more rigid than the first material. The seal portion can have a radially inward facing contact surface that defines a central opening of the sealing.

Abstract: A closed-loop seal having an irregularly shaped profile to seal a pivot assembly of a track assembly comprises a body comprising an inner diameter wall, an outer diameter wall, a first sidewall, and a second sidewall, wherein at least one pairing of the inner and outer walls and the first and second sidewalls are non-parallel. The irregularly shaped profile can comprise a curved rectangular profile or a trapezoidal profile. Walls of the body can be joined at curved surfaces having uniform or different radii of curvature. The seal can comprise urethane.

Abstract: A seal includes an annular body defining a radial direction, an axial direction, and a circumferential direction; and further defines a cross-sectional area including a perimeter. The perimeter may comprise a first axial extremity, a second axial extremity, an outer radial extremity, and an inner radial extremity. The perimeter may include a first axial extremity defining surface and a second axial extremity defining surface, a first concave arcuate surface interposed between the inner radial extremity and the second axial extremity, and a second concave arcuate surface interposed between the outer radial extremity and the second axial extremity.

Abstract: A seal according to an embodiment of the present disclosure comprises an annular body defining a radial direction, an axial direction, and a circumferential direction; and further defining a cross-sectional area including a perimeter. The perimeter may comprise a first axial extremity, a second axial extremity, an outer radial extremity, and an inner radial extremity. The perimeter includes a first axially extending surface defining the outer radial extremity and an inner radial convex arcuate surface defining the inner radial extremity.

Abstract: A face seal includes first and second members which are mounted together, a seal member, and a backup ring. The first member extends along a longitudinal axis and defines an interior cavity. The first and second members each includes a respective sealing surface that extends radially relative to the longitudinal axis. At least one of the sealing surfaces defines an annular groove. The seal member is disposed within the annular groove and is in sealing contact with the sealing surfaces. The backup ring is disposed within the annular groove such that the seal member is radially inward of the backup ring. One sealing surface is movable relative to the other sealing surface in response to increased interior cavity pressure, thereby defining a gap therebetween. The backup ring is interposed between the seal member and the gap such that the backup ring occludes an opening to the gap.

Abstract: A seal assembly can be incorporated into a track pin joint assembly including a pin defining a longitudinal axis, a first member and a second member both coaxial with the pin about the longitudinal axis. The first member is pivotable about the longitudinal axis with respect to the second member and includes a load ring engagement surface defining a seal cavity disposed in proximal relationship to the second member. A seal assembly including a seal ring and a load ring is disposed in the seal cavity and sealingly engages the first and second members. An axial segment of a seal ring engagement surface of the load ring extends over at least half the length, measured along the longitudinal axis, between a radial segment of the seal ring engagement surface and a radial segment of a first member engagement surface of the load ring. At least one of a load ring engagement surface of the first member and an axial segment of the first member engagement surface of the load ring includes a convex rounded portion.

Abstract: A seal assembly can be incorporated into a track pin joint assembly including a pin defining a longitudinal axis, a first member and a second member both coaxial with the pin about the longitudinal axis. The first member is pivotable about the longitudinal axis with respect to the second member and includes a load ring engagement surface defining, at least in part, an axially-extending seal cavity disposed in proximal relationship to the second member. A seal assembly including a seal ring and a load ring is disposed in the seal cavity and sealingly engages the first member and the second member. At least one of a load ring engagement surface of the first member and an axial segment of a first member engagement surface of the load ring includes a convex rounded portion extending over at least half the axial length thereof.

Abstract: A seal assembly can be incorporated into a track pin joint assembly including a pin defining a longitudinal axis, a first member and a second member both coaxial with the pin about the longitudinal axis. The first member is pivotable about the longitudinal axis with respect to the second member and includes a load ring engagement surface defining, at least in part, an axially-extending seal cavity disposed in proximal relationship to the second member. A seal assembly including a seal ring and a load ring is disposed in the seal cavity and sealingly engages the first member and the second member. At least one of a load ring engagement surface of the first member and an axial segment of a first member engagement surface of the load ring includes a convex rounded portion extending over at least half the axial length thereof.

Abstract: A seal assembly can be incorporated into a track pin joint assembly including a pin defining a longitudinal axis, a first member and a second member both coaxial with the pin about the longitudinal axis. The first member is pivotable about the longitudinal axis with respect to the second member and includes a load ring engagement surface defining a seal cavity disposed in proximal relationship to the second member. A seal assembly including a seal ring and a load ring is disposed in the seal cavity and sealingly engages the first and second members. An axial segment of a seal ring engagement surface of the load ring extends over at least half the length, measured along the longitudinal axis, between a radial segment of the seal ring engagement surface and a radial segment of a first member engagement surface of the load ring. At least one of a load ring engagement surface of the first member and an axial segment of the first member engagement surface of the load ring includes a convex rounded portion.

Abstract: A load member is provided for a face seal that reduces the potential for elastomeric set to occur after a period of use. The load member includes a biasing member positioned in a flexible coating.

Abstract: A unidirectional rod sealing ring adapted for forming a sealed condition in association with a member such as a piston rod or shaft axially movable in a bore of a hydraulic cylinder, the sealing ring including an elastomeric ring member having an axially facing sealing face, an opposite axially facing pressure face, a circumferential radial outer surface, and a circumferential radial inner surface, the elastomeric ring member being cooperatively receivable in an annular groove around the bore of a hydraulic cylinder with the sealing face in position in opposed relation to a first axial groove wall, and the pressure face positioned in opposed relation to an opposite second groove wall, the sealing face including at least one continuous annular bead of relatively small radial extent positioned for sealably engaging the first axial groove wall, and the radial inner surface including an inner most circumferential lip of relatively small axial extent positioned for circumferential sealed engagement with the member

Abstract: A wiper seal is disclosed which includes an elastomeric member having a metal support member adhesively bonded thereto. The elastomeric member has a first substantially flat surface that is perpendicular to a reference axis of the wiper seal, an outer peripheral surface that is substantially parallel with the reference axis, and an inner peripheral surface that forms an acute angle with the reference axis. The metal support member has a first leg portion that coincides with the outer peripheral surface and a second leg portion that coincides with the substantially flat perpendicular surface. The intersection of the first and second leg portions forms a generally sharp corner or at least a predetermined minimum radius size. When the wiper seal is installed in a recess of a housing, the substantially flat perpendicular surface is generally flush with the surface of the housing adjacent the recess to substantially eliminate recesses or pockets that could retain dirt and/or other contaminants.

Abstract: A buffer seal is provided and adapted to absorb high pressures. The buffer seal includes a body portion and a sealing portion with a backup ring disposed in a groove adjacent to the sealing portion. The sealing portion has a first surface that is perpendicular to a reference axis of the buffer seal and a second surface that forms an acute angle with the reference axis, preferably less than thirty degrees. The first surface of the sealing portion extends axially from the body portion to form a shoulder. The shoulder functions during use to provide a surface that pressurized fluid can act against to urge the sealing portion against a shaft.

Abstract: A continuous compression ring and a continuous oil control ring for a piston reciprocally operable in a combustion cylinder of an IC engine, the continuous compression ring being cooperatively receivable in a groove extending around the piston and having a generally G-shaped cross-sectional shape including a circumferentially extending lip positioned to be located radially outwardly of a cylindrical outer surface extending around the piston, the lip adapted for forming a substantially sealed condition around the piston in cooperation with an oil film on the combustion cylinder wall, the continuous oil control ring being cooperatively receivable in another groove extending around the piston and having a generally n-shaped cross-sectional shape including a circumferentially extending leg portion adapted to be positioned radially outwardly of the outer surface of the piston around the piston for scraping the oil film on the combustion cylinder wall during the reciprocal operation of the piston in the combustion

Abstract: A rod scraper for hydraulic cylinders and the like is disclosed which includes an elastomeric ring member having an inner surface defining a central aperture adapted for receiving a rod for axial movement relative thereto, the inner surface including a scraper portion having an inner most circumferential lip positioned adjacent one end of the elastomeric seal member for scraping the rod, the elastomeric ring member further having a curved outer surface portion generally axially coextensive with the scraper portion, and a metallic backing ring affixed in overlaying relation to at least a substantial portion of the curved outer surface portion of the elastomeric ring member, the backing ring being resiliently biased against the curved outer surface portion to urge the lip of the elastomeric ring member against the rod and sufficiently flexible to allow some radial movement of the rod while maintaining the lip in circumferential contact with the rod.