Disclosed is a swivel including inner and outer mutually rotatable swivel members having respective inner fluid paths communicating with each other through an annular space at an interface between the swivel members and being provided with a sealing arrangement on a side of the annular space at the interface including a peripheral groove provided in the inner and/or outer swivel member, and a sealing element received therein and arranged for static sealing against a first one of the swivel members, inside the groove and for dynamic sealing against a second one of the swivel members, a surface inside the groove in the first one of the swivel members abutting the sealing element being a textured surface extending along at least a part of one or more inner surfaces of the groove and having three-dimensional textural elements for making frictional contact with the sealing element.

The invention relates to a mechanical seal arrangement comprising a first slide ring seal (2) having a rotating slide ring (21) and a stationary slide ring (22) defining a sealing gap (23) therebetween, a shaft sleeve (4), a driver (5) which connects the shaft sleeve (4) to the rotating slide ring (21) and which is arranged to transmit rotation of the shaft sleeve (4) to the rotating slide ring (21) a connecting arrangement (6) for connecting the shaft sleeve (4) to the driver (5), the connecting arrangement (6) comprising at least two rotary locks (60) and at least two recesses (40) in the shaft sleeve (4), wherein each of the rotary locks (60) has a bearing portion (61) and a locking portion (62), wherein the locking portion (62) laterally projects beyond the bearing portion (61), and wherein a rotational axis (Y-Y) of each rotary lock (60) is parallel to a central axis (X-X) of the shaft sleeve (4).

A torque-resistant dual face seal includes a seal ring having an L-shaped cross-section including an axially-extending flange and a radially-extending flange, the seal ring including an annular seal face and an opposing loading surface. The seal ring includes a plurality of deformations formed in a spaced apart arrangement circumferentially around the axially-extending flange. An axial cross-section through the axially-extending flange and intersecting one of the plurality of deformations includes a stepped geometry. The plurality of deformations allows a load ring to squeeze into the plurality of deformations to increase a surface area contact between the seal ring and the load ring.

The present application discloses a cartridge type mechanical sealing device for sealing liquid, the sealing device including a gland, a rotating ring adaptor assembly, a rotating ring, a stationary ring adaptor, a stationary ring, and a locking ring mounted around a rotating shaft. The gland is configured to be fastened to a rear end surface of the equipment enclosure; the rotating ring adaptor assembly including a front end portion configured to be in the liquid and supporting the rotating ring and a rear end portion extending through the gland to be surrounded by the locking assembly which is configured to fasten the rotating ring adaptor assembly to the rotating shaft; the stationary ring adaptor is fastened to a rear end surface of the gland; and when the stationary ring adaptor is released from the gland, a rotating ring adaptor of the rotating ring adaptor assembly or the stationary ring adaptor can be pulled along the rotating ring in a direction away from the liquid so as to be separated from the gland, thereby separating the rotating ring and the stationary ring to release the sealing interface and exposing the rotating ring and the stationary ring to the outside air respectively and providing for in-line maintenance and a reduction of possible leakage points.

A device for adjusting and compensating working wear gaps of a floating seal ring, which is provided on a movable seat chamber, a floating seal ring and a rubber ring are provided in the movable seat chamber, the movable seat chamber and the shaft are sealed by a shaft sealing rubber ring, wherein: adjusting screw holes are provided on a center of the shaft along an axial direction, a bayonet slot for penetrating the shaft is provided on an outer side of the shaft along a radial direction, a bayonet is provided in the bayonet slot, and a locking groove is provided on an end portion of the movable seat chamber, an adjusting screw inserted into the adjusting screw hole is provided on an end portion of the shaft. The bayonet is locked into the locking groove of the movable seat chamber, so as to form an integral linkage of the bayonet, the shaft and the movable seat chamber, which are capable of rotating along the shaft. A first end of the adjusting screw is located outside the end portion of the shaft, a second end of the adjusting screw passes through the adjusting screw hole and contacts a first end of the bayonet, and a second end of the bayonet is located in the locking groove of the movable seat chamber for pushing the moving seat chamber. The working wear gaps of the floating seal ring are variable and adjustable, and random wear compensation can be performed, so the service life of the floating seal ring can be doubled.

A mechanical seal that employs an axially movable spring holder plate that engages a sealing element, such as an O-ring, associated with a stationary seal ring. In turn, the stationary seal ring can have a sealing face that engages with a sealing face of a rotary seal ring. The rotary seal ring can also have a sealing element, such as an O-ring, associated therewith. The O-rings are initially disposed in an unloaded position where they are not radially compressed and hence the ends do not expand circumferentially past the end faces of the holder or gland segments. The spring holder plate can be moved axially by tightening selected bolts associated therewith. When moved axially, the spring holder plate moves the stationary seal ring and the O-ring associated therewith in an axially inboard direction, thus placing the O-rings in a loaded position, where the O-rings are radially compressed.

The present invention provides a method of replacing a failed pump seal of a pump having a pump housing and a rotating pump shaft. As part of the method, there is provided a specially configured rescue seal. The rescue seal is placed on the pump shaft above the failed seal so that the pump shaft extends through both the failed seal and the rescue seal. In order to affix the rescue seal to the pump shaft and above the failed seal, a plurality of studs are first attached to the pump housing after removing some of the bolts that fasten the failed seal to the pump housing. The failed seal is then secured to the studs with nuts. Nuts are then placed on the studs to secure the rescue seal to the studs above the failed seal.

A mechanical seal assembly adapted for arrangement around a rotating shaft of a pump has first and second seals. Both include primary and mating rings, biasing mechanisms and annular flexible sealing membranes. The two seals can have different seal balances or different biasing forces (or both) to allow the second seal to run dry for extended periods.

An electric machine (1), comprising a housing (2), in which a stator (3) and a rotor (4), which is rotatable relative to the stator (3), are accommodated, a cooling device with a cooling channel (5) through which a coolant can flow and which extends from an inlet (7), through the housing (2) and through the rotor (4), to an outlet (6), and a sealing device (21) for sealing off the rotor (4) with respect to an interior space (22) of the housing, wherein a reservoir (12) for coolant leakage that occurs during a rotation of the rotor (4) is formed between the sealing device (21) and the housing (2). Additionally described are a drivetrain and a vehicle (17) having such an electric machine (1), and a method for operating the electric machine (1).

A mechanical seal includes rotating seal ring which rotate with a rotary shaft, stationary seal rings, and an adaptor which holds the stationary seal rings, the adaptor being fixed to a seal cover by bolts. The mechanical seal further includes a plurality of holders brought into contact with the adapter and provided with through holes. A body part of each of the bolts passes through each of the through holes and is screwed into each of threaded holes formed in the seal cover. The plurality of holders being arranged so as to surround the rotary shaft.