An assembly includes a housing, a carrier, a spring element and a seal element. The housing includes a bore and an annular groove that extends axially along a centerline into the housing from the bore. The carrier projects axially along the centerline into the annular groove. The carrier is configured to translate axially along the centerline relative to the housing. The spring element is arranged within the annular groove. The spring element is configured to bias the carrier axially away from the housing along the centerline. The seal element is mounted to the carrier and arranged within the bore.

The invention relates to a mechanical seal arrangement comprising a mechanical seal (2) having a rotating seal ring (21) and a stationary seal ring (22) defining a seal gap (23) therebetween, a secondary seal (3) arranged on a back surface of one of the seal rings facing away from a sealing surface of the seal ring, the secondary seal (3) being made of a base material and having a coating (7) such that a material bond is formed between the coating (7) and the base material of the secondary seal, the secondary seal (3) being made of a base material and having a coating (7) such that a substance-to-substance connection is formed between the coating (7) and the base material of the secondary seal, a sleeve-shaped member (4) arranged radially inside the secondary seal (3), wherein a gap (5) having a gap height (H) is present between the sleeve-shaped component (4) and a region of one of the sliding rings facing radially inwards, the secondary seal (3) seals against the back side of this slide ring and the sleeve-shaped component (4), wherein the coating (7) is provided on a first side (31) of the secondary seal (3), which first side facing the sliding ring, and a second side (32) of the secondary seal (3) which second side facing the sleeve-shaped component (4), wherein a stiffness of the coating (7) is greater than a stiffness of the base material of the secondary seal (3) and wherein a thickness (D) of the coating is smaller than or equal to a gap height (H) of the gap (5).

A seal assembly includes an outer annular case disposed within and coupled with a rotatable outer member to be angularly displace about a central axis. An annular flexible seal is disposed within and coupled with the case to angularly displace about the central axis when the outer member rotates about the axis. The flexible seal has elastomeric sealing lip(s) engageable with an outer circumferential surface of the shaft or of a sleeve disposed about the shaft. An annular inner rigid seal is disposed within the outer case and has an inner end coupled with the shaft or the sleeve, the flexible seal being radially displaceable with respect to the inner rigid seal. An outer annular rigid seal is disposed about the inner seal and has an inner end sealing against the inner rigid seal. A biasing member biases the outer rigid seal against the inner rigid seal.

Provided is a mechanical seal that eliminates the need to provide an additional bearing, enables size reduction and cost reduction, and can provide stable performance as a bearing. A stationary-side seal ring 20 is disposed on the high-pressure fluid side of a rotating-side seal ring 21, and fixed to a housing 1 and has sliding surfaces 20a, 20c, and 20d supporting a rotating shaft 2 in both a radial direction and a thrust direction. The rotating-side seal ring 21 is axially movably fitted by an urging means 25 fitted on the rotating shaft 2. The rotating shaft 2 has an outer peripheral surface 2a a contacting and sliding on the radial sliding surface 20a of the stationary-side seal ring 20 to be supported radially. Thrust rings 10a and 10b are provided between the stationary-side seal ring 20 and the rotating shaft 2, for supporting the rotating shaft 2 in thrust directions.

A seal arrangement includes a first and a second machine part which are arranged spaced apart from one another with the formation of a sealing gap and can be moved relative to one another about a movement axis. A seal element with a base section is arranged on or in a seal holding structure of one of the two machine parts. A sealing head bears in a dynamically sealing manner by way of a sealing section against a sealing surface of the respective other machine part in order to seal a high-pressure side from a low-pressure side. The seal element on the high-pressure side has at least one flow element, wherein during relative movement of the two machine parts fluid on the high-pressure side in the area of the sealing section of flows onto the sealing head.

A seal assembly includes an annular seal support, and an annular seal housing operably connected to the seal support. The seal housing includes a first axial surface facing away from the seal support, and a second axial surface opposite the first axial surface. A seal is located at the first axial surface. One or more first springs extend between the seal support and the second axial surface to urge the seal housing away from the seal support, and one or more second springs are located at the first axial surface to urge the seal housing toward the seal support.

A seal including a jacket including an annular body defining a central axis and a recess extending into the annular body concentric to the central axis, where the jacket includes at least 30 wt % of a PTFE and at least 10 wt % of a filler material, and where the filler material includes a boron-containing material, a nitrogen-containing material, a titanium-containing material, a silicon-containing material, a carbon fiber, a glass fiber, or a combination thereof; and an energizing element disposed in the recess, where the energizing element includes a gap-less spring.

A sealing device for a gas-liquid two-phase fluid medium under variable working conditions includes a rotating shaft and a housing, and a chamber formed by the housing is configured to accommodate the gas-liquid two-phase fluid medium. The sealing device further includes a labyrinth sealing mechanism and a fluid dynamic-pressure mechanical sealing mechanism with double end faces, where the labyrinth sealing mechanism and the fluid dynamic-pressure mechanical sealing mechanism with double end faces conduct mutual synergetic effect. Sealing buffer chambers are arranged between the labyrinth sealing mechanism and the fluid dynamic-pressure mechanical sealing mechanism; the fluid dynamic-pressure mechanical sealing mechanism is provided with stationary rings and movable rings, where the stationary rings and the movable rings oppositely abut against with each other.

Spring energized seal assemblies each with one or two sealing elements and a canted coil spring located in a spring cavity of the sealing element or of the two sealing elements to bias an inner flange and an outer flange of the respective spring cavity away from one another. The canted coil springs can have un-conventional coil shapes with one or more straight coil segments and/or with curved connecting ends. The coils can have dimples to provide multiple biasing points. The coils can have loops. The canted coil springs with un-conventional coil shapes can be used to improve spring loading on a sealing element.

A sealing device includes: a housing; a seal ring configured to be axially displaceably inserted along an inner circumference of the housing, the seal ring including a front-end surface and a rear-end surface which defines packing mounting space; a packing configured to establish sealing between the housing and the seal ring, the packing being disposed in the packing mounting space; and spring means disposed on the rear-end surface side of the seal ring to elastically bias the seal ring toward the front-end surface side.