Abstract: A mechanical seal for sealing against a rotating shaft includes a static ring positioned about the shaft and a movable ring positioned about the shaft and in sliding contact with the static ring. The movable ring is rotatable with the shaft and a tray sleeve is attached to one of the movable ring and the static ring, with the tray sleeve being selectively movable in an axial direction along the shaft. Wear between the static ring and the movable ring causes the tray sleeve to move in the axial direction. The tray sleeve includes an indicator and relative movement of the indicator along the shaft is in proportion to the wear between the static ring and the movable ring.

Abstract: 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.

Abstract: A mechanical sealing device includes rotating and stationary rings, and rotating and stationary ring adaptors mounted around a rotating shaft. An end surface of the rotating ring adjoins an end surface of the stationary ring by means of springs. The sealing interface includes an adjoining point that is in contact with a liquid medium in an axial section of the device, and an annular peripheral rim surrounding the rotating and stationary rings for agitating the liquid medium. At least a part of the peripheral rim is formed with an inclined surface oriented toward the adjoining point, the inclined surface defining a start point close to the adjoining point and an end point away from the adjoining point in the axial section of the device. The start point is spaced apart from the adjoining point while the end point extends not beyond the adjoining point in the axial direction.

Abstract: A split oil seal composed of double springs and double rings comprises an elastic outer ring intended to be statically mounted in a cavity outside a bearing box or gear box, and an elastic inner ring intended to be sleeved on a shaft of the device and held by the outer ring. The outer ring has an outer ring cut and the inner ring has an inner ring cut. The split oil seal further comprises a radial forcing element and a circumferential forcing element, wherein the radial forcing element exerts tension in both directions directed to outer circumferences and inner centers of both the outer ring and the inner ring in radial directions thereof, and the circumferential forcing element exerts a circumferential closing force to the inner ring. By using the split oil seal composed of double springs and double rings of the present invention, the advantages of convenient mounting and removal as well as strong anti-disengaging ability are achieved.

Abstract: A mechanical seal for sealing against a rotating shaft includes a static ring positioned about the shaft and a movable ring positioned about the shaft and in sliding contact with the static ring. The movable ring is rotatable with the shaft and a tray sleeve is attached to one of the movable ring and the static ring, with the tray sleeve being selectively movable in an axial direction along the shaft. Wear between the static ring and the movable ring causes the tray sleeve to move in the axial direction. The tray sleeve includes an indicator and relative movement of the indicator along the shaft is in proportion to the wear between the static ring and the movable ring.

Abstract: A mechanical seal for liquid with an axially floating tray sleeve inside, comprising a movable ring, a static ring, a locking ring and a tray sleeve, wherein the static ring is connected to a cover and a shell to be stationary, the movable ring is fixed with a shaft or a shaft sleeve through the locking ring and rotates, and the contact end faces of the movable ring and the static ring form a sealing face which is vertical to and slides against the shaft; the tray sleeve is between a sealing ring and the shaft or shaft sleeve in the direction vertical to the shaft; the tray sleeve is connected to the movable ring or the static ring near an inner end of the liquid in the axial direction; the tray sleeve extends out of the cover in the axial direction near the air end.

Abstract: Disclosed is a mechanical seal with an outer forwardly-inclined rim for liquids, including a moving ring and a stationary ring; end portions of the moving ring and the stationary ring are seal end faces in mutual friction and perpendicular to the axis, for preventing the liquid at one side of the seal end faces from leaking to the other side; one of the moving ring and the stationary ring is provided with a rim at one side in contact with liquid, and the rim is protruding in its radial direction and inclined toward the other ring, so that when a transmission device runs, liquid turbulence occurs to an inclined surface of the rim, and the generated centrifugal force makes particles or impurities in the liquid distant from the seal end faces, so as to effectively prevent particles or impurities in the liquid from entering the seal end faces.

Abstract: Disclosed is a mechanical seal with an outer forwardly-inclined rim for liquids, including a moving ring and a stationary ring; end portions of the moving ring and the stationary ring are seal end faces in mutual friction and perpendicular to the axis, for preventing the liquid at one side of the seal end faces from leaking to the other side; one of the moving ring and the stationary ring is provided with a rim at one side in contact with liquid, and the rim is protruding in its radial direction and inclined toward the other ring, so that when a transmission device runs, liquid turbulence occurs to an inclined surface of the rim, and the generated centrifugal force makes particles or impurities in the liquid distant from the seal end faces, so as to effectively prevent particles or impurities in the liquid from entering the seal end faces.