DF-(P)DGS6
DiamondFace

DF-(P)DGS6
DiamondFace

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


1 Seal face, stationary
2 Seat, 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

DF-(P)DGS6
DiamondFace

Features

  • DiamondFace bonded primary seal faces
  • Safe cupped retainer for rotating ring
  • Fully operational in both liquid and gas phases
  • Bi-directional
  • Ready-to-fit cartridge unit
  • Single, double, tandem and tandem seal with intermediate labyrinth arrangement available

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 = 25 … 280 mm (0.98" … 11.02")
Pressure: p = 0 … 100 bar (1,450 PSI)
with PTFE option: 0 ... 250 bar (3,625 PSI)
Temperature:
t = -30 °C … +200 °C (-22 °F … +392 °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
Secondary seals: FKM, PTFE (DF-PDGS6)
Metal parts: 1.4006 and other stainless steels, aluminum

Standards and approvals

  • NACE

Notes

Dimensions on request.



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