O-ring seal Centurion 800

circularmetalfor aircraft

Eaton offers a diverse line of mechanical seals and sealing components, including pressure-balanced face seals, circumferential segmented seals, brush seals and welded metal bellows seals. We also specialize in hydrodynamic designs for face and circumferential seals that significantly improve performance. We can custom-design and fabricate the exact seal for your needs. Eaton’s Centurion 800 Series mechanical seals are stationary, “face” type seal with an all-metallic construction. Originally designed for extreme environmental applications, the 800 Series has found its way into a wide array of applications: from fuel controls, auxiliary power units and small aircraft engine gas turbine mainshafts, to helicopter gearboxes, to cryogenic turbopumps and nuclear valves and systems. The 800 Series welded metal bellows seal shown is comprised of a carbon-graphitesealing element held in a low-expansion alloy carrier. The carrier is welded to a series of alternating welded stamped diaphragms, which perform as both a hermetic secondary seal and a spring for the mechanical seal. The effective diameter of the bellows acts as the seal’s balance diameter. The bellows produce a low spring rate and allow the seal to operate over a long axial operating length while producing a very controlled mechanical load. For seals required to function in applications of high pressure, bellows plates can be configured to control effective diameter (ED) shift, controlling pneumatic loads produced on the sealing interface.