DGS Mechanical seals for pumps

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