Aura-120NS-Seal-john-cran
Aura-120NS-Seal-john-cran

Features mechanical seal aura 120ns

Silicon carbide rotating and stationary sealing faces, spring-energized-polymer secondary sealing. This latest design delivers up to 120 bar static pressure with 42% reduced radial cross section and 25% reduced axial length to fit smaller compressor seal cavities.

Recommended Applications aura 120ns

  • Centrifugal compressors
  • Other compressors

About Mechanical seal aura 120ns

Aura™ 120 narrow section gas seals enable the latest John Crane gas seal technology to be fitted into older equipment, bringing with it the benefits of non-contacting design. Gas seal technology eliminates the need for oil lubrication associated with contacting seals and the resulting need to address harmful emissions trapped in the oil.

Investing in retrofitting oil seals to dry gas seal solutions will increase the reliability of compressors and other rotating equipment. The Aura™ 120 narrow section design applies decades of retrofit experience to minimize upgrade costs and accelerate turnaround.

Oil and gas methane emissions are the second most important greenhouse gas source, accounting for ~18% of total climate human-related climate impact. Upgrading legacy compressors to dry gas seal technology can reduce methane emissions by up to 95 percent.

Design Features mechanical seal aura 120ns

  • Aura 220: Silicon carbide rotating and stationary sealing faces, springenergized-polymer secondary sealing for high-pressure duties to 220 bar static pressure
  • Aura 180: Silicon carbide rotating and carbon stationary sealing faces, advanced-polymer secondary sealing, up to 180 bar static pressure
  • Aura 100: Silicon carbide rotating and carbon stationary sealing faces, O-ring secondary sealing up to 95 bar static pressure
  • Aura 120NS: Silicon carbide rotating and stationary sealing faces, spring-energized-polymer secondary sealing. This latest design delivers up to 120 bar static pressure with 42% reduced radial cross section and 25% reduced axial length to fit smaller compressor seal cavities.

Operating range mechanical seal aura 120ns

  • Temperature Limits:
    -58°F to 392°F/ -50°C to 200°C

  • Pressure Limits:
    up to 3190 psi (g)/ 220 bar(g)

  • Speed Limits
    up to 459fps/140m/s measured at balance diameter

  • Size Limits
    for shaft sizes up to 10.25”/260mm, corresponding to seal sizes up to 12.125”/307.9mm

Product Description aura 120ns

The Aura range represents the next generation of John Crane gas seals,
designed to reduce seal-operating and transaction costs by implementing
a common design approach across the range and delivering extended
maintenance intervals. The new Aura 120NS provides solutions for
compressor applications with small cross-section cavities.

  • Wider performance envelope, including bidirectional operation
  • Increased reliability for extended maintenance intervals
  • Improved design for simpler serviceability

Performance Capabilities mechanical seal aura 120ns
 

SealShaft sizeBore SizePressure LimitsSpeedTemperature
Limits2
Aura 22070 mm to 230 mm/
2.75” to 9.125”		161 mm to 371 mm/
6.37“ to 14.60”		Static: to 220 bar/3,190 psi
Dynamic: to 200 bar/2,900 psi		140 ms-1
459 ft/s		-50°C to 200°C
-58°F to 392°F
Aura 18070 mm to 260 mm/
2.75” to 10.25”		165 mm to 412 mm/
6.50” to 16.25“		Static: to 180 bar/2,650 psi
Dynamic: to 160 bar/2,350 psi		120 ms-1
394 ft/s
Aura 10070 mm to 260 mm/
2.75” to 10.25”		165 mm to 412 mm/
6.50” to 16.25“		Static: to 95 bar/1,380 psi
Dynamic: to 95 bar/1,380 psi		120 ms-1
394 ft/s		-20°C to 200°C
-4°F to 392°F
Aura 120NS73 mm to 155 mm/
2.87” to 6.10”		140 mm to 223 mm/
5.50“ to 8.78”		Static: to 120 bar/1,740 psi
Dynamic: to 100 bar/1,450 psi		100 ms-1
328 ft/s		-50°C to 200°C
-58°F to 392°F