DF-(P)DGS6
DiamondFace

Request product

DF-(P)DGS6
DiamondFace

DF-(P)DGS6<br/>DiamondFace
Request product
DF-DGS6 Tandem seal
with intermedia labyrinth

1 Primary seal face with DF-coating*, stationary
2 Primary seat with DF-coating*, rotating
3 Thrust ring
4 Spring
5 Shaft sleeve and seat retainer
6 Intermediate sleeve
7 Housing (adapted in size to the installation space)
8 "Adjustable" nut for axial misalignment
9 Split ring
10 Clamping ring
11 Cover
12 Process side labyrinth
GBI Gas Buffer Inlet
GBO Gas Buffer Outlet
D Drain
* Optional: secondary seal face and seat also with DF-coating.

DF-(P)DGS6
DiamondFace

Features

  • DiamondFace bonded primary seal faces
  • Safe cupped retainer for rotating ring
  • Bi-directional
  • Ready-to-fit cartridge unit
  • Single, double, tandem and tandem seal with intermediate labyrinth arrangement available
  • An ideal solution for Ethane, CO2 and many other low vapor margin applications
  • This type of seals can handle both liquid and gaseous phases during the operation of the pump

Advantages

  • Significantly lower leakage rate compared to competition
  • Longer life span
  • Wear and contact free operation
  • Self-cleaning 3-D gas grooves
  • High gas film stiffness
  • Proven, reliable and economical solution
  • Can be adjusted even to extreme narrow installation space - retrofits are easy to implement

Operating range

Shaft diameter:
D = 32 … 154 mm (1.26" … 6.06")
Pressure (static and dynamic): p = 0 … 120 bar (1,450 PSI)
with PTFE option: 0 ... 250 bar (3,625 PSI)
Temperature:
t = -20 °C … +150 °C (-4 °F … +302 °F)
with PTFE option: -100 °C ... +200 °C (-148 °F ... +392 °F)
Sliding velocity:
vg = 0.6 … 140 m/s (2 … 459 ft/s)

For applications outside the operating range mentioned, please inquire.

Materials

Primary seat and seal face: Silicon carbide with DiamondFace bonding
Secondary seat and seal face: Silicon carbide with DLC coating. Optional also with DF-coating
Secondary seals: FKM, PTFE (DF-PDGS6) or other elastomers, depending on product gas composition
Metal parts: 1.4006 (410) and other stainless steels

Standards and approvals

  • NACE

Notes

Dimensions on request.

Recommended piping plans



Product variants

DF-PDGS6

Version for high pressure and both low and high temperature applications. With U-cups and special dynamic sealing elements. Secondary seals made of PTFE.
DF-DGS6 Tandem seal

Similar products

The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

EagleBurgmann WORLDWIDE