The invention provides a sealing device which can suppress occurrence of static leakage and has a seal lip and a seal flange which are slidably in contact with each other, and a screw groove arranged in an end face, in an axial direction, of the seal flange. In the sealing device, the seal lip attached to a non-rotational housing side is slidably in contact with the end face, in the axial direction, of the seal flange on the rotational axis side, and which has the screw groove arranged in the end face, in the axial direction, of the seal flange so as to exert a fluid pumping action during rotation, is characterized in that the screw groove has an inner-circumferential-side inclined surface and an outer-circumferential-side inclined surface as the internal surfaces, and has a groove bottom part in a circular arc cross-sectional shape that interconnects both of the inclined surfaces.

A rolling-element bearing unit for a wheel bearing assembly of a vehicle includes a first rolling-element bearing having an outer bearing ring and an inner bearing ring and rolling elements disposed between the outer bearing ring and the inner bearing ring and a first seal element having a seal-element base body having a first support member mounted to an axial outer surface of the inner bearing ring and a first seal lip pressed against a radial end surface of the outer bearing ring to hold the outer bearing ring in position relative to the inner bearing ring. Also a wheel bearing assembly including two such rolling element bearing units.

A radial shaft seal assembly is provided including an inner wear sleeve having a cylindrical wall with a bore sized for tight receipt of a shaft therethrough and an exposed cylindrical outer surface. The inner wear sleeve includes an oil side flange and an air side flange extending radially outwardly from the inner wall in axially spaced relation from one another. The assembly includes an outer case having cylindrical outer wall configured for receipt in a housing. An elastomeric body is fixed to the outer case. The elastomeric body includes an annular serpentine portion extending radially inwardly from the outer wall to a radially innermost end. A main seal lip extends from the innermost end of the annular serpentine portion into sealed contact with the oil side flange. A dust lip extends from the innermost end of the annular serpentine portion into sealed contact with the air side flange.

An elastic body includes an annular main body portion to be disposed in an annular gap, a seal lip portion extending from a portion, closer to an object to be sealed, of the main body portion and being to be in contact with an inner member, a flange portion extending outwardly from an end, opposite to the object to be sealed, of the main body portion and including a first side closer to the object to be sealed, the first side being to be in contact with an outer member, a side lip portion extending from the end opposite to the object to be sealed in a direction away from the object to be sealed, and a projecting portion formed circumferentially on a second side, opposite to the object to be sealed, of the flange portion. The side lip portion has a back surface configured to be in contact with the projecting portion in response to the side lip portion being pressed by a mating member disposed opposite to the object to be sealed.

The invention relates to a sealing assembly for the limitation of fluid flow along a rotatable shaft that is passed through a housing member that separates a high pressure side and a low pressure side, wherein the sealing assembly comprises: a rotor with a sealing surface which essentially extends radially in relation to the shaft, a flushing sealing system that extends between the rotor and the housing member, which sealing system is in contact with both the housing member and the sealing surface of the rotor to effect a sealing effect, wherein the flushing sealing system comprises an elastic sealing member that in use imposes a targeted compression force on the sealing surface.

A rotary joint assembly including a rotating portion. The rotating portion includes an annular body and a pair of annular sealing members. Each annular sealing member of the pair of annular sealing members is attached to a side of the annular body. An air passageway is formed in the annular body. The rotary joint assembly also includes a non-rotating portion. The non-rotating portion has a non-rotating portion air passageway formed therein. The non-rotating portion air passageway is in fluid communication with the air passageway formed in the annular body. A pair of annular air seal members are provided between the rotating portion and the non-rotating portion. Each annular air seal member of the pair of annular air seal members contacts a sealing surface of one of the annular seal members to provide a seal around an interface between the air passageway formed in the annular body and the non-rotating portion air passageway.

The present invention provides a rotary seal including a first part having an axial sealing lip and a second part having an axial counterface against which the axial sealing lip bears. According to the invention, a rotational one of the first part and the second part is provided with a reservoir for retaining a volume of grease at a location radially inward of the axial sealing lip. The reservoir is designed such that the movement of grease under the action of centrifugal force is prevented, while the movement of base oil, which bleeds from the volume of grease retained in the reservoir, is allowed. As a result, the supply of base oil to the sealing contact takes place for a longer period of time, which extends the life of the seal.

A seal body includes a flange that supports a lip configured to make sliding contact with a fixed surface. The flange includes a groove for receiving a garter spring on one face, and inwardly and outwardly facing conical surfaces on the opposite surface, the conical surfaces defining a lip where they meet. The ratio of the thickness of the portion of the lip located to one side of a plane that includes an edge of the groove to the thickness of the portion of the lip on the other side of the plane is about 44%.

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.

A bearing device for a wheel, which has improved axial assembly accuracy of a sealing member by reducing the amount of springback. The bearing device for a wheel comprises an inner sealing member that blocks an inner opening end of an annular space formed by an outer ring and an inner ring. A sealing ring of the inner sealing member has a core metal fitting in the outer ring and an elastic member joined to the core metal. The elastic member has: a pressing part that is pressed inward in the axial direction when the sealing ring is press-fitted into the outer ring; and a non-pressing part that is not pressed inward in the axial direction when the sealing ring is press-fitted into the outer ring, wherein the axial thickness of the pressing part is thinner than the axial thickness of the non-pressing part.