Abstract: The invention relates to a mechanical seal arrangement, in particular a retarder-mechanical seal arrangement, comprising a first mechanical seal (2) with a first rotating slide ring (3) and a first stationary slide ring (4) which define a first sealing gap (5) in between them, an additional seal (6), a cooling medium space (7) which is filled with a cooling medium and extends all the way to the sealing gap of the first mechanical seal (2), wherein the first mechanical seal (2) seals the cooling medium space against an environment, a cooling medium access (8) into the cooling medium space (7) for supplying cooling medium, and a cooling medium exit (9) from the cooling medium space (7) for draining cooling medium, wherein the additional seal (6) is arranged in the cooling medium access (8), and wherein the additional seal (6) is configured to open when a pressure inside the cooling medium access (8) rises above a first pressure (P1) inside the cooling medium space (7), and to close at a second pressure (P0) ins

Abstract: A mechanical face seal including a primary ring which is axially movably mounted, and a mating ring (3, 3?, 3?), wherein the primary ring and a mating ring each comprise adjoining sealing surfaces. The primary ring is pressed by a spring against the mating ring. The spring has a bellows-like shape. The spring is made out of an elastomer. The mechanical face seal achieves a small installation space for a mechanical face seal.

Abstract: A mechanical face seal is provided that surrounds a shaft that is to be sealed, the mechanical face seal includes a stationary seal ring wherein the shaft is integral to the mechanical face seal, is configured in one piece, makes a transition to the stationary seal ring and includes the same material as the ring.

Abstract: An axial plain bearing assembly includes a thrust ring provided for common rotation with a rotary component. The thrust ring has a radial seal face on an end face thereof for co-operating with a radial seal face of a non-rotational seal ring of a gas-lubricated mechanical face seal assembly for sealing said rotary and stationary components against each other. A plurality of peripherally spaced gas-pumping grooves is formed in at least one of the radial seal faces of the thrust and non-rotational seal rings. A mass ring connected with the thrust ring is provided at an axial distance from the thrust ring. The mass ring is configured and adapted to exert a balancing force on the thrust ring under centrifugal forces acting on the mass ring during common rotation of the mass and thrust rings to compensate for thermal distortion of the thrust ring during operation.

Abstract: An arrangement of a shaft with a slip-ring seal mounted thereon is disclosed. The slip-ring seal (3) comprises a pair of cooperating slip rings (4,5), the sealing faces of which define a sealing gap (6) between them. One of the slip rings is mounted on the shaft (2) with torque transmission from a drive element (9) mounted on the shaft, whilst the other slip ring is provided for fixed mounting on a stationary component. The arrangement is characterised in that the drive element (9) comprises a tubular drive housing (11), extending over the external circumference of the slip ring (4) with a radial gap (12) and a passage (13) for introduction of a flow medium is provided, opening out at one end in a chamber (A), defined by the drive housing (11), which drains out through the radial gap (12), whereby the radial gap forms a flow path for the flow medium which terminates at or near the sealing gap (6).

Abstract: An arrangement of a shaft with a slip-ring seal mounted thereon is disclosed. The slip-ring seal (3) comprises a pair of cooperating slip rings (4,5), the sealing faces of which define a sealing gap (6) between them. One of the slip rings is mounted on the shaft (2) with torque transmission from a drive element (9) mounted on the shaft, whilst the other slip ring is provided for fixed mounting on a stationary component. The arrangement is characterised in that the drive element (9) comprises a tubular drive housing (11), extending over the external circumference of the slip ring (4) with a radial gap (12) and a passage (13) for introduction of a flow medium is provided, opening out at one end in a chamber (A), defined by the drive housing (11), which drains out through the radial gap (12), whereby the radial gap forms a flow path for the flow medium which terminates at or near the sealing gap (6).

Abstract: An axial plain bearing assembly includes a thrust ring provided for common rotation with a rotary component. The thrust ring has a radial seal face on an end face thereof for co-operating with a radial seal face of a non-rotational seal ring of a gas-lubricated mechanical face seal assembly for sealing said rotary and stationary components against each other. A plurality of peripherally spaced gas-pumping grooves is formed in at least one of the radial seal faces of the thrust and non-rotational seal rings. A mass ring connected with the thrust ring is provided at an axial distance from the thrust ring. The mass ring is configured and adapted to exert a balancing force on the thrust ring under centrifugal forces acting on the mass ring during common rotation of the mass and thrust rings to compensate for thermal distortion of the thrust ring during operation.

Abstract: A mechanical face seal is provided that surrounds a shaft that is to be sealed, the mechanical face seal includes a stationary seal ring wherein the shaft is integral to the mechanical face seal, is configured in one piece, makes a transition to the stationary seal ring and includes the same material as the ring.

Abstract: A mechanical face seal assembly comprises at least a single pair of seal rings (4, 5) whose opposed seal faces (9, 10) are held together in sealing engagement, one of the seal rings is non-rotatable while the other is provided for rotation in common with a rotary component (2). The two seal rings are formed of a SiC material to which a graphite component is added for at least one of the seal rings. The graphite component is provided in particulate form in a proportion of between 1.0 and 4.0 Vol % in a SiC matrix material comprising SiC crystals having a grain size of between 5 and 1500 ?m. The grain size of the graphite particles amounts to between 20 and 200 ?m.

Abstract: An axial plain bearing assembly includes a thrust ring provided for common rotation with a rotary component, and a counter ring provided for mounting non-rotationally on a stationary component. The thrust and counter rings comprise bearing surfaces facing each other, between which a friction-minimizing oil film can be formed during operation. The thrust ring further comprises a radial seal face on an end face thereof remote from the counter ring for cooperating with a radial seal face of a non-rotational seal ring of a mechanical face seal assembly for forming a seal between said thrust and non-rotational seal rings. Accordingly the thrust ring is multi-functional in that it provides for an axial support of the rotary component and simultaneously acts as a rotating seal ring of a mechanical face seal assembly.

Abstract: A gas sensor, in particular a lambda probe, for ascertaining the pollutant and/or oxygen content in emission gases of internal combustion engines, having a housing accommodating at least one sensor element, the sensor element having a section on the terminal side and a section on the measuring-gas side, and having a connecting element that connects the sensor element, which has a plurality of electrically conductive contact areas, at its terminal-side section to a plurality of electrically conductive supply leads. The gas sensor has the feature of a connecting element which is formed from a spring element produced in one piece from ceramic material.

Abstract: A biasing means of a face seal device for applying a bias force between a pair of co-operating seal rings includes a pair of axially spaced support elements and a bias spring disposed between and supported by said support elements. The support elements are axially movable relatively to each other. Protruding means are provided on one of said support elements, with which the other support element can engage for limiting the axial movement of the support elements in a direction away from one another. The protruding means are spaced from the one support element by an axial distance larger than a predetermined maximum axial operational spacing the support elements can occupy after installation of the biasing means on the face seal device, and smaller than the axial length of the bias spring in a relaxed state.

Abstract: A method for connecting a probe whose electrical connections end on a circuit board that can be introduced into a receptacle of a connector plug that comprises two half-shells which carry on sides facing one another the mating contacts for the connections of the circuit board and between them form a receptacle for the circuit board, the half-shells being held together under tension by way of a U-shaped spring which surrounds them.