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DGS Mechanical seals for pumps

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SEAL FACE:  Silicon carbide with DLC coating, Carbon graphite
SEAT:  Silicon carbide with DLC coating
SECONDARY SEALS:  FKM
METAL PARTS:  1.4006 or other stainless steels
OTHER MATERIALS ON REQUEST:  Available also with EagleBurgmann DiamondFace technology

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Description

Description

Features

  • Gas-lubricated
  • Uni-directional or bi-directional
  • Ready-to-fit cartridge unit Single, double, tandem and tandem with intermediate labyrinth available
  • Separation seals as labyrinths, carbon rings or Coba Seal are optionally available

Advantages

  • Wear-free and contact-free operation
  • Self-cleaning 3D gas grooves
  • High gas film stiffness
  • Secure cupped retainer for seat Available in various materials for optimized chemical resistance
  • Proven, reliable and economical solution

Operating range
Shaft diameter:
ds1 = 29 … 410 mm (1.14″ … 16.14″)
Pressure:
p = 0 … 160 bar (2,320 PSI)
Design temperature:
t = -46 °C … +230 °C
(-51 °F … +446 °F)
Sliding velocity:
vg = up to 227 m/s (744 ft/s)

Standards and approvals

  • NACE
  • API617

Recommended applications

  • Oil and gas industry
  • Refining technology
  • Petrochemical industry
  • Hydrocarbon gas
  • Ammonia
  • Nitrogen
  • Air
  • Centrifugal compressors
  • Turbo expanders
  • Blowers
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