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 sealing apparatus which is capable of preventing static leakage of a target to be sealed without increasing sliding resistance with respect to a shaft, and a surface processing method of a disk member of the sealing apparatus which is capable of processing a surface of the disk member, such as a slinger, provided at the sealing apparatus. A surface processing method of a disk member of a sealing apparatus for forming a plurality of fine spiral grooves on a surface of the disk member provided at the sealing apparatus has a grinding member having a plurality of fine projections that is moved to an outer edge side while the grinding member is pressed against the surface of the disk member which relatively rotates around an axis, and the sealing apparatus includes a slinger at which a plurality of fine spiral grooves are randomly formed on another side surface of a flange portion.

A sealing device configured to be mounted on a rolling bearing provided for a wheel bearing device, the wheel bearing device including an axle pipe and a rolling bearing being fitted onto an outer circumferential stepped portion formed on an outer circumference of the axle pipe to rotatably support a wheel, the sealing device being mounted between an outer ring and an inner ring. The sealing device includes a slinger member having a first cylindrical portion, a disk portion, and a second cylindrical portion; a core body member having a cylindrical portion and a disk portion; and a seal body made of an elastic material. An inner circumferential face of a seal body cylindrical portion has an inclined portion constituting a labyrinth of which diameter gradually increases toward one side from the other side in the axial direction between the inner circumferential face and the second cylindrical portion.

The invention relates to a sealing element for an ink chamber of a rotary printing press, wherein the sealing element has a sealing surface that rests against a roller body during operation of the rotary printing press. In order to reduce wear on the sealing element, the sealing surface has at least one flow outlet opening, at which an overpressure of a fluid may be built up during operation of the rotary printing press, in such a way that the fluid between the sealing surface and roller body forms a sealing flow film.

An embodiment includes a gate valve comprising: a valve body including a cavity coupled to a channel having proximal and distal portions; a gate to seal and unseal the channel; proximal and distal seats adjacent the gate; wherein (a) the proximal seat traverses towards the gate and stops at a first position when the gate is closing and the proximal channel portion is more highly pressurized than the cavity, and (b) the distal seat slides away from the gate and stops at a second position when the gate is closing and the cavity is more heavily pressurized than the distal channel portion. Other embodiments are described herein.

A sealing arrangement for an electric machine, which is between a first part attached to a rotatable shaft and a second part immobile with respect to a stator of the electric machine includes a plurality of zig-zag sections of a channel of a labyrinth seal in a radial direction of the electric machine. The channel of the labyrinth seal includes a second seal which is fixedly attached to the first part and which has an elastic material part, the second seal is pressed in the radial direction against a surface of the second part, a normal of which has a component parallel to the radial direction, at rotational speeds a centrifugal force of which to the second seal is weaker than a spring force of the second seal, and the second seal opening a gap between the second seal and said surface at rotational speeds the centrifugal force of which to the second seal is greater than the spring force of the second seal.

A sealing device for a bearing unit, the device having a stationary part provided with: a first metal shield, an elastomer coating, co-molded on the first shield, at least one contacting lip, radially internal, belonging to the elastomer coating. The sealing device having a rotatable part provided with a second metal shield on which the contacting lip makes a sliding contact. The second metal shield is provided with a plurality of flow baffles positioned at least on an axially exposed surface of the shield, shaped as recesses realized through the axially exposed surface and distributed along a radially outer peripheral edge of the shield.

A stuffing box assembly having a body and a bore therethrough. Disposed in the body in surrounding relationship to the bore are first and second axially displaced annular seals, a detection zone being formed between the first and second seals. There is an injection port in open communication with the detection zone and a pressure transducer operatively connected to the detection zone to determine pressure changes in the detection zone.

The present disclosure provides an improved bellows type seal. In the present disclosure, the bellows of the seal dampen resulting in the seal having a longer useful life and can withstand higher loads. The seal includes a damper assembly that includes a spring and a band that are engaged on the exterior of a bellows for dampening vibrations.

Provided is a seal ring configured so that stable lubrication performance can be provided across a wide range of rotation speed. A seal ring for sealing a clearance between a rotary shaft and a housing includes multiple static pressure grooves provided at a sliding surface of the seal ring and arranged in a circumferential direction, the static pressure grooves being opened on a sealed fluid side and closed on an outer diameter side, a circumferential length of each of the static pressure grooves being shorter than a radial length of each of the static pressure grooves.