An apparatus has a first member, a shaft rotatable relative to the first member about an axis, and a seal system. The seal system has: a seal carried by the first member and having a seal face; and a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face. The seal system is a dry face seal system. The seat further includes a section having: an outer diameter surface encircled by the seal; and a rim.

A sealing device (10) for providing a fluid-tight sealing of a joint comprising a first part (30) and a second part (32) with a relative movement in between. The sealing device (10) comprises: an outer sealing part (12) designed to contact the first part and the second part, an inner sealing part (14) designed to contact the first part and the second part, and a spacing structure (16) connecting the outer sealing part (12) and the inner sealing part (14). The outer sealing part (12) and the inner sealing part (14) define an intermediate space (18) between the outer sealing part (12) and the inner sealing part (14). The outer sealing part (12) and the inner sealing part (14) are being configured to seal off the intermediate space (18) from both an exterior and an interior of the joint, and the intermediate space (18) is configured to be influid contact with both the first part (30) and the second part (32).

A radial seal and radial seal assembly (10) are disclosed. An embodiment of seal assembly may include an inner rotating shaft (20) with inner rotating shaft fluid feed holes (22); a primary segmented seal (30); a secondary segmented seal (40); a tertiary seal (50) that may axially seal the primary and secondary segmented seals; and an outer housing (60) including a plurality of outer housing fluid feed holes (62). In embodiments, the assembly is configured so that, as the inner rotating shaft rotates, the inner rotating shaft fluid feed holes periodically come into fluid communication alignment with outer housing fluid feed holes.

A hydraulic machine has a first assembly and a second assembly movable in rotation relative to each other about an axis of rotation. The first assembly and the second assembly define an internal volume and are in contact along an interface. The interface between the first assembly and the second assembly is provided with a sealing element positioned in a housing connected to the internal volume via a first duct, and to the surrounding environment via a second duct. The first duct is provided with a sealing element adapted to isolate the housing from the internal volume, where a secondary cavity is formed in the first assembly or in the second assembly. The secondary cavity is connected to the housing and isolated from the internal volume.

A rotary seal assembly has a first and second machine element spaced apart forming a sealing gap. The first machine element has a seal-holding structure and the second machine element a sealing surface. A rotary seal is held on the seal-holding structure of the first machine element which has a sealing lip, the front side of which faces the sealing surface and at least partially abuts the sealing surface of the second machine element, pretensioned in a dynamically sealing manner. The sealing lip has pockets on its rear side or on its end face facing the high pressure side. The sealing lip on its rear side, in the case of rearwardly arranged pockets, is tensioned against the sealing surface by an elastically deformable pretensioning ring, and is tensioned in the case of the front side pockets by an elastic resilience inherent in the material of the rotary seal.

The invention relates to a slide ring seal, in particular a running gear seal, at least comprising a slide ring, which is in operative connection with a counter running surface, in particular a counter ring, the slide ring having a sliding surface and an accommodating area for an elastomer spring element, at least the sliding surface of the slide ring being provided with a convex contour.

A wheel assembly includes a spindle; a wheel hub rotatable relative to the spindle; and a seal mounted between the spindle and the wheel hub, the spindle, the wheel hub, and the seal defining a sealed cavity, the seal having a first axial end and a second axial end, the first axial end coupled to the spindle, the second axial end coupled to the wheel hub.

An inside-type mechanical seal is mounted between a rotating shaft and a housing, and adapted for preventing leakage of a sealed fluid from an outer circumference of a sliding surface in the direction of an inner circumference thereof, wherein provided are a rotary-side sealing ring mounted on a rotating shaft side, a stationary-side sealing ring mounted on a seal case side, an annular packing for pushing the stationary-side sealing ring toward the rotary-side sealing ring, a holding part on the outer circumferential side being fitted in the seal case, and a seal lip part on the inner circumferential side being in close contact with the stationary-side sealing ring, and wherein provided to the seal case is a ring-shaped projection abutting against a back surface of the packing during assembly of the mechanical seal, and adapted for pushing the packing toward the stationary-side sealing ring.

A seal ring for a seal assembly includes a body and a seal flange. The body is generally cylindrical and extends along a longitudinal axis between a load end and a seal end. The seal flange is disposed adjacent the seal end of the body. The seal flange projects radially in circumscribing manner from the body to an outer perimeter thereof. The seal flange includes a sealing face having a sealing band, disposed adjacent the outer perimeter of the seal flange, and an inner relieved area, disposed between the sealing band and an inner perimeter of the seal flange. The sealing band is polished by an isotropic finishing process after a layer of coating composition is applied to at least the body. The layer of coating composition is formulated to withstand the isotropic finishing process and to help increase the corrosion resistance of the seal ring.

A method for manufacturing a face seal may generally include positioning a machining device relative to the face seal such that the face seal is compressed between a machining surface of the machining device and a support member on which the face seal is supported. In addition, the method may include removing material from a seal flange of the face seal using the machining device while the face seal remains compressed between the machining device and the support member and monitoring a compressive load applied through the face seal as material is being removed from the seal flange. Moreover, the method may include adjusting the operation of the machining device to prevent further removal of material from the seal flange when the monitored compressive load is equal to a predetermined load setting.