Abstract: A pneumatic plug gauge has been developed in the context of the invention. This plug gauge comprises a first measuring channel which can be connected to a pressure medium source and opens into a first outlet for the pressure medium, which outlet can be directed to a surface of the workpiece to be tested. According to the invention, this plug gauge is designed to determine the tilt angle between a section on the surface thereof and a region opposite this section on the surface of the workpiece by virtue of the first outlet being arranged at one end of the section and at least one second outlet being provided, which second outlet is arranged at the other end of the section. It has been recognized that the admittedly high precision of pneumatic length measurements can be converted in a particularly advantageous manner to high precision of the angle measurement in this manner. The tilt angle can be measured at least with an accuracy of less than one tenth of a degree.

Abstract: A pneumatic plug gauge has been developed in the context of the invention. This plug gauge comprises a first measuring channel which can be connected to a pressure medium source and opens into a first outlet for the pressure medium, which outlet can be directed to a surface of the workpiece to be tested. According to the invention, this plug gauge is designed to determine the tilt angle between a section on the surface thereof and a region opposite this section on the surface of the workpiece by virtue of the first outlet being arranged at one end of the section and at least one second outlet being provided, which second outlet is arranged at the other end of the section. It has been recognized that the admittedly high precision of pneumatic length measurements can be converted in a particularly advantageous manner to high precision of the angle measurement in this manner. The tilt angle can be measured at least with an accuracy of less than one tenth of a degree.

Abstract: The present invention refers to a seal ring for a mechanical seal, comprising: a base body (2) with a diamond layer (3) which is applied to the base body (2) and configured as a sliding surface, wherein the diamond layer (3) has a thickness (D) which is less than or equal to 4 ?m, particularly less than or equal to 3 ?m, particularly less than or equal to 2 ?m, particularly preferably about 1 ?m, and wherein the base body (2) is without fissures or only comprises fissures that have a maximum longitudinal extension (L) on a surface of the base body (2) or in the base body (2) that is less than or equal to 5 ?m.

Abstract: The present invention refers to a seal ring for a mechanical seal, comprising: a base body (2) with a diamond layer (3) which is applied to the base body (2) and configured as a sliding surface, wherein the diamond layer (3) has a thickness (D) which is less than or equal to 4 ?m, particularly less than or equal to 3 ?m, particularly less than or equal to 2 ?m, particularly preferably about 1 ?m, and wherein the base body (2) is without fissures or only comprises fissures that have a maximum longitudinal extension (L) on a surface of the base body (2) or in the base body (2) that is less than or equal to 5 ?m.

Abstract: A slide ring seal arrangement comprises a rotationally fixed slide ring (4) and a slide ring (11), which is provided for rotating together with a rotating component, these slide rings each being held in a loose seat and interacting, in, in essence, radially oriented sealing surfaces, which are prestressed with a main prestressing force while in contact with one another. Each slide ring, on its front face that faces away from the sealing surface, is axially supported on a supporting part (14, 17) via an annular bearing surface (16, 20) provided between the respective supporting part and the adjacent front face of the respective slide ring. A load ratio (d12?dH2)/(d12?d22) of =2.0, preferably between 0.8 and 2.0, preferably no greater than between 1.0 and 1.5, more preferably approximately 1.3 is maintained on the bearing surface (16, 20). The measurement (d1?d2) of each bearing surface (16, 20) is equal to =10 mm, preferably between 0.2 and 2.0, preferably no more than approximately 0.6 mm.

Abstract: The present invention refers to a seal ring comprising: a base region (20), a diamond coating (21) applied to the base region (20), and a lubricant coating (22) applied to the diamond coating (21), which adheres to the diamond coating and fills recesses (23) of the diamond coating (21). Furthermore, the present invention refers to a mechanical seal comprising at least one seal ring according to the invention.

Abstract: The present invention refers to an apparatus for rotationally fixing a seal ring (4) of a mechanical seal assembly retained at a mounting component (1) to be axially movable, comprising a force transmitting ring (10) retained at the mounting component to be axially movable and a rotation prevention device comprising at least one first engaging member (17) configured to engage with the mounting component and the force transmitting ring in a form-fit manner and at least one second engaging member (18) configured to engage with the force transmitting ring and the seal ring in a form-fit manner, the first engaging member being arranged circumferentially offset with respect to the second engaging member, characterized in that the engaging members (17, 18) protrude axially from the force transmitting ring (10) or the seal ring (4) toward the respectively other component (seal ring or force transmitting ring) and are configured to be received in axial recesses (19, 20) provided in the respectively other component wi

Abstract: A slide ring seal arrangement comprises a rotationally fixed slide ring (4) and a slide ring (11), which is provided for rotating together with a rotating component, these slide rings each being held in a loose seat and interacting, in, in essence, radially oriented sealing surfaces, which are prestressed with a main prestressing force while in contact with one another. Each slide ring, on its front face that faces away from the sealing surface, is axially supported on a supporting part (14, 17) via an annular bearing surface (16, 20) provided between the respective supporting part and the adjacent front face of the respective slide ring. A load ratio (d12?dH2)/(d12?d22) of =2.0, preferably between 0.8 and 2.0, preferably no greater than between 1.0 and 1.5, more preferably approximately 1.3 is maintained on the bearing surface (16, 20). The measurement (d1?d2) of each bearing surface (16, 20) is equal to =10 mm, preferably between 0.2 and 2.0, preferably no more than approximately 0.6 mm.

Abstract: A mechanical seal assembly including at least one pair of co-operating seal rings, one of which is provided for common rotation with a rotating component and the other of which is provided rotationally fixed at a stationary component. One of the seal rings is axially movable and axially biased with a biasing force against the other seal ring, the biasing force being transmittable through a force transmitting ring to the respective seal ring, in order to bias facing sliding surfaces of the seal rings, between which a sealing gap is formed during operation, in a mutual sealing engagement, and a secondary sealing assembly provided at the force transmitting ring for sealing the axially movable seal ring with respect to at least one circumferential guiding surface of a guiding component guiding the movement of the seal ring and the force transmitting ring.

Abstract: The invention relates to a seal ring of a mechanical seal assembly, comprising a base body made of a material including at least one carbide material and a coating provided at the base body and creating a sliding surface, said coating consisting of a diamond material. The inventions is characterized in that the base body is formed of a two-component material by embedding particulate regions made of a diamond material compatible with the diamond material of the coating into the material comprising at least one carbide.

Abstract: A secondary sealing element comprises a base body (12) made of a synthetic material and comprising a base portion (13) and a seal portion (14) which each comprise coaxially aligned, axially adjacent through bores (17, 31) for the passage of a component, and an annular disc element (25) accommodated in the base portion and comprising a through bore (30) coaxially aligned with the through bores in the base and seal portions and being made of a material which differs from that of the base body. In the unloaded state, the through bore (30) of the annular disc element (25) has a radial dimension d which is greater than that D2 of the through bore (31) in the seal portion (14) and smaller than that D1 in the base portion (13) of the base body (12). The annular disc element consists of a carbon material. An important field of application for the secondary sealing element is that of mechanical face seals for sealing relatively moveable components.

Abstract: A slide ring seal assembly comprises at least one pair of interacting slide rings (4, 5) of which one is provided for mounting on a stationary part and the other is provided for rotating together with a rotating part and of which one is mounted in a manner that enables it to axially move and is axially pretensioned with a designated axial pretensioning force against the other slide ring by means of a spring bellows assembly (11). This spring bellows assembly comprises a first spring bellows (13) that, at one end, are supported on the respective slide ring and, at the other end, are supported on an annular divider element (12) mounted in a manner that enables it to axially move relative to the respective part, and comprises a second spring bellows (14) that, at one end, are supported on said divider element and, at the other end, are supported on the respective part.

Abstract: A face seal device for use with components rotating at a high rotational speed includes a non-rotating face seal ring (5) and a rotary face seal ring (11). The rotary face seal ring is mounted in a loose fit for common rotation with a rotating component and includes a sealing face (6) which, in operation, is essentially radially aligned for cooperation with an opposite sealing face (16) of the non-rotating face seal ring. A heavy-mass-contributing element (22) is arranged to rotate in common with the rotating component and engages a portion of the rotary face seal ring. The center of gravity of the heavy-mass-contributing element is axially spaced from that of the rotary face seal ring, whereby, in operation, a torque directed towards the non-rotating face seal ring is applied to the rotary face seal ring. This torque arises from the centrifugal forces that correspond to the mass-contributing element and the spacing between the centers of gravity.

Abstract: A face seal device for use with components rotating at a high rotational speed includes a non-rotating face seal ring (5) and a rotary face seal ring (11). The rotary face seal ring is mounted in a loose fit for common rotation with a rotating component and includes a sealing face (6) which, in operation, is essentially radially aligned for cooperation with an opposite sealing face (16) of the non-rotating face seal ring. A heavy-mass-contributing element (22) is arranged to rotate in common with the rotating component and engages a portion of the rotary face seal ring. The center of gravity of the heavy-mass-contributing element is axially spaced from that of the rotary face seal ring, whereby, in operation, a torque directed towards the non-rotating face seal ring is applied to the rotary face seal ring. This torque arises from the centrifugal forces that correspond to the mass-contributing element and the spacing between the centers of gravity.