Patents Assigned to Sealtec MCK Limited
  • System for lubricating mechanical seals
    Patent number: 6070880
    Abstract: A mechanical seal combination includes a double mechanical seal and a barrier fluid pump system. A barrier fluid circulating pump 10 is coupled to rotatable shaft 3 so as to derive its motive power from the rotatable shaft. When the rotatable shaft is not running, a by-pass arrangement causes barrier fluids to flow between the barrier fluid header tank 7 and the seal 3, avoiding pump 10, and allowing a thermosyphon effect to be created.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: June 6, 2000
    Assignee: Sealtec MCK Limited
    Inventor: James F. McKeever