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PRODUCT Mechanical Seal

Cartex (Single & Dual)

Dual seal ⁄ Cartridge ⁄ Balanced ⁄ Independent of direction of rotation ⁄ Double pressure balanced ⁄ Integrated pumping device ⁄ Variants available: for eccentric screw pumps (-Vario) and gas-lubricated version (-GSDN)

Operation Range

  • Temperature: t = –40 °C ... +220 °C
  • Pressure: p1 = 25 bar
  • Sliding velocity: vg = 16 m/s
  • Pressure: p1 = 20 bar

MD291 (Dual)

Cartridge design ⁄ Balanced ⁄ Ultra compact design ⁄ Double seal ⁄ Independent of direction of rotation ⁄ Inboard seal can withstand both forward and back pressures ⁄ Stationary, inside mounted type ⁄ Springs do not contact the liquid

Operation Range

  • Temperature: t = -20 °C … 160 °C
  • Pressure: p = vacuum … 10 bar
  • Sliding velocity: vg = 20 m/s
  • Viscosity: … 1 Pa·s
  • Solids content: … 10 %

M481 (Dual)

For top entry drives, type M481 to DIN ⁄ Single or double seals ⁄ Unbalanced ⁄ Independent of direction of rotation ⁄ Multiple springs rotating ⁄ Liquid-lubricated ⁄ Cartridge unit

Operation Range

  • Pressure: p1 = vacuum ... 16 bar, p3 = max. 18 bar (261 PSI)
  • Temperature: t1* = –40 °C ... +200 (350) °C

CGSH-K

For stepped shafts ⁄ Rotating spring ⁄ Single or double seal available ⁄ Balanced ⁄ Standard version with U-grooves, V-grooves optional (dependent of direction of rotation) ⁄ Gas-lubricated ⁄ Does not open in the event of buffer pressure failure, self closing at pressure reversal

Operation Range

  • Temperature: t = –20 °C ... +170 °C
  • Pressure: p = 25 bar
  • Sliding velocity: vg = 4 ... 25 m/s

PDGS

Gas-lubricated ⁄ Uni-directional or bi-directional ⁄ Elastomer-free ⁄ Ready-to-fit cartridge unit ⁄ Single, double, tandem seal and tandem with ⁄ intermediate labyrinth available

Operation Range

  • Temperature: t = –70 °C ... +230 °C
  • Pressure: p = 0 ... 450 bar
  • Sliding velocity: vg = 0.6 ... 200 m/s

Espey WD500

Multi-part seal rings, overlapped mortised with gas tight joints ⁄ Split housing design ⁄ Lowest possible operation gap – lowest leakage ⁄ Overlapped mortised seal rings ⁄ Dry-running ⁄ Self-adjusting seal rings ⁄ Compensation of radial and axial shaft deflections ⁄ Short axial installation length ⁄ No sealing components mounted on the shaft and hence ⁄ no additional shaft vibrations

Operation Range

  • Temperature: t = –20 °C ... +500 °C
  • Pressure: p = vacuum ... 3 bar
  • Sliding velocity: vg = max. 40 m/s

Diamond Face

EagleBurgmann achieved remarkable advancement for mechanical seal technology in 2007 when the company acquired DiamondFaces®. The new technology which made a great difference greatly extends the service life of mechanical seals. It considerably increases time intervals between maintenance and repairs, sharply reducing the life cycle cost. DiamondFaces® technology delivers major added value to all areas including oil & gas, oil refinery, chemistry, slurry, phamaceutical and water supply and improves the overall system performance. The coating with uncrystallized diamond, which is inferior to natural diamond, makes a decisive difference. DiamondFaces® delivers excellent performance in a wide range of pumps, mixers, and compressors.

Diaphragm Coupling

Contoured diaphragm coupling is manufactured EagleBurgmann Japan. EagleBurgmann’s Diaphragm Coupling has been successfully applied in various high-speed and high-torque applications such as compressor and turbine and is highly rated by users. Contoured Diaphragm Coupling is designed to have all the shaft misalignment is accommodated by the very thin elastic bending of the diaphragm. The flexibility composed of bending, compression, and delivery of high torque is achieved through the elastic transformation and the torsional strength of the specially contoured diaphragm.