CobaSeal seal
CobaSeal seal

Features mechanical seal cobaseal

  • Gas-lubricated
  • Bi-directional
  • Ready-to-fit cartridge unit
  • Self cleaning 3D gas grooves
  • Aerostatic and aerodynamic lift-off

Advantages mechanical seal cobaseal

  • Extremely low leakage
  • Double arranged (co-axial) dry gas seal with just one pair of seal faces
  • Insensitive to oil contamination due to its special design
  • Wear-free, non-contacting operation in all conditions
  • Insensitive to radial vibrations due to axial sealing gap
  • Slow-roll or turning operation capable (static lift-off)
  • No limits regarding dew point of separation gas (silicon carbide instead of carbon)
  • Lower N2 consumption than any other system
  • N2 can be switched off during standstill – the gap will close and still provide the best oil sealing performance
  • Best in class oil sealing by extremely small sealing gap and sling effect of rotating ring
dimension-seal-cobaseal-burgmann

Operating range mechanical seal cobaseal

  • Shaft diameter:
    29.5 … 355 mm (1.16″ … 13.97″)
  • Design pressure (mechanical integrity):
    p = 0 … 70 bar (0 … 1000 PSI)
  • Normal operating pressure:
    p = 2.7 bar (39.16 PSI)
  • Temperature:
    t = -20 °C … +200 °C (-4 °F … +392 °F)
  • Sliding velocity:
    vg = 0 … 150 m/s (0 … 492 ft/s)
    Dew point: No limitation

Materials mechanical seal cobaseal

  • Seal face: Silicon carbide*
  • Seat: Ductile stainless steel*
  • Shaft sleeve: Stainless steel TC-coated
  • Secondary seals: FKM
  • Metal parts: 1.4006

* With special EagleBurgmann high performance iDLC (in situ Diamond-Like-Carbon) coating

ItemDescription
1Seal face, stationary
2Seat, rotating
3Thrust ring
4Spring
5Shaft sleeve and seat retainer
6Housing (size matched to installation space)
DSeparation gas

Recommended applications seal cobaseal Burgmann

  • Oil and gas industry
  • Refining technology
  • Petrochemical industry
  • Nitrogen
  • Air
  • Centrifugal compressors
  • Blowers