Abstract: A mechanical seal assembly has rotational and stationary sealing members) and a drive unit, which is axially adjacent one of the sealing members. An energizing member urges the drive unit towards the sealing members. A retainer axially and radially retains one of the sealing members. The drive unit is in contact with one of the rotational and stationary members by way of contacting surfaces which are in the range of 1 and 20 light bands of flatness, inclusive.

Abstract: A mechanical seal assembly has rotational and stationary sealing members) and a drive unit, which is axially adjacent one of the sealing members. An energizing member urges the drive unit towards the sealing members. A retainer axially and radially retains one of the sealing members. The drive unit is in contact with one of the rotational and stationary members by way of contacting surfaces which are in the range of 1 and 20 light bands of flatness, inclusive.

Abstract: A seal support system for a mechanical seal includes a system vessel for containing barrier fluid. Closed loop pipe work connects the vessel to a mechanical seal with a device provided for feeding barrier fluid to the system vessel. A further vessel is provided that is able to be in fluid communication with the system vessel. The further vessel may be provided with an elastomeric membrane, which may be filled with a gas under pressure to an extent required to allow for the effect of the highest anticipated temperature which might occur in a particular application.

Abstract: A bearing seal includes a rotor and a stator and at least one electrically conductive elastomeric toroidal member. When the bearing seal is installed in equipment and is providing sealing between the rotor and the stator, an electrical grounding path is provided therebetween, the electrical grounding path extending through the electrically conductive elastomeric toriodal member.

Abstract: A seal support system, or a kit therefor, for use with a sealing device to seal a piece of industrial equipment, includes a stand with fixed support elements for accommodating selected functional components with different sizes of components being accommodated by differently sized pipework elements. The stand has one or more substantially fixed brackets with each bracket having a component securing device at predetermined longitudinal space intervals.

Abstract: A mechanical seal for sealing between a housing and a relatively rotating shaft includes a gland for attachment to a housing for a piece of equipment, at least one adjustable setting in the ground and extending therefrom for engaging the housing and a non-permanent device for detachably attaching the gland to the housing for a piece of equipment.

Abstract: An annular seal cavity throat bushing includes an inner annular surface having a substantially latitudinal channel with the channel being provided with at least one orifice to allow fluid communication between the inside of the bushing and the outside of the bushing. The bushing is further provided with at least one groove extending substantially longitudinally from one end of the bushing to the channel. The groove has at least one tapered edge which increases the width of the groove along its length.

Abstract: A mechanical seal support system includes a pressure vessel for supplying barrier fluid to a mechanical seal, a device for determining the mass of the pressure vessel and a device for providing additional barrier fluid to the pressure vessel when a determination is made that the mass of the pressure vessel is below a predetermined level responsive to the device for determining mass of the pressure vessel.

Abstract: A seal support system for a mechanical seal includes a system vessel for containing barrier fluid. Closed loop pipe work connects the vessel to a mechanical seal with a device provided for feeding barrier fluid to the system vessel. A further vessel is provided that is able to be in fluid communication with the system vessel. The further vessel may be provided with an elastomeric membrane, which may be filled with a gas under pressure to an extent required to allow for the effect of the highest anticipated temperature which might occur in a particular application.

Abstract: An annular seal cavity throat bushing includes an inner annular surface having a substantially latitudinal channel with the channel being provided with at least one orifice to allow fluid communication between the inside of the bushing and the outside of the bushing. The bushing is further provided with at least one groove extending substantially longitudinally from one end of the bushing to the channel. The groove has at least one tapered edge which increases the width of the groove along its length.

Abstract: A seal support system, or a kit therefor, for use with a sealing device to seal a piece of industrial equipment, includes a stand with fixed support elements for accommodating selected functional components with different sizes of components being accommodated by differently sized pipework elements. The stand has one or more substantially fixed brackets with each bracket having a component securing device at predetermined longitudinal space intervals.

Abstract: An isolator seal includes a stator member for placement into the stator of rotating equipment and a rotor member for placement onto a rotary shaft of the rotating equipment. The stator member and the rotor member provide respective adjacent surfaces, while a static shut-off device engages both adjacent surfaces when the rotor member is static and disengages one or more of the surfaces when the rotor member is dynamic. In one embodiment of the invention at least one of the surfaces is inclined to the longitudinal axis at an angle greater or less than 90°.

Abstract: An isolator seal includes a stator member for placement into the stator of rotating equipment and a rotor member for placement onto a rotary shaft of the rotating equipment. The stator member and the rotor member provide respective adjacent surfaces, while a static shut-off device engages both adjacent surfaces when the rotor member is static and disengages one or more of the surfaces when the rotor member is dynamic. In one embodiment of the invention at least one of the surfaces is inclined to the longitudinal axis at an angle greater or less than 90°.

Abstract: An isolator sealing device includes a stator, which locates into a housing of a piece of rotating equipment, and a rotor which radially locates onto a rotary shaft of the piece of rotating equipment. The rotor and stator have one or more adjacent surfaces facing a labyrinth seal and a lip seal which sealingly engages the stator or the rotor when the equipment is idle and sealingly disengages the stator or the rotor when the equipment is operational.

Abstract: A rotary seal has a floating seal face in a sealing relationship with a stationary seal face, and a fluid collection cavity adjacent the floating seal face and the stationary seal face. The seal further includes a device for introducing a lubricant into the vicinity of the fluid collection cavity and a device for promoting coalescence of the lubricant, so that the lubricant accumulates in the fluid collection cavity and lubricates the seal faces.

Abstract: An isolator seal includes a stator member for placement into the stator of rotating equipment and a rotor member for placement onto a rotary shaft of the rotating equipment. The stator member and the rotor member provide respective adjacent surfaces, while a static shut-off device engages both adjacent surfaces when the rotor member is static and disengages one or more of the surfaces when the rotor member is dynamic. In one embodiment of the invention at least one of the surfaces is inclined to the longitudinal axis at an angle greater or less than 90°.