Cartex
Dual seals

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Cartex
Dual seals

Cartex <br/>Dual seals
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Item Description
1 Seal face
2, 5, 7, 10, 13, 15 O-Ring
3 Spring
4 Seat
6 Shaft sleeve
8 Cover
9 Seal face
11 Spring
12 Seat
14 Drive collar
16 Set screw
17 Snap ring
18 Assembly fixture
19 Hex socket head screw
20 Gasket
21 Screw plug
22 Gasket

Cartex
Dual seals

Features

  • Dual seal
  • Cartridge
  • Balanced
  • Independent of direction of rotation
  • Double pressure balanced
  • Integrated pumping device
  • Variants available: for eccentric screw pumps (-Vario) and gas-lubricated version (-GSDN)

Advantages

  • Ideal seal for standardizations
  • Universal applicable for packings conversions, retrofits or OEM
  • No dimensional modification of the seal chamber (centrifugal pumps) necessary, small radial installation height
  • No damage of the shaft by dynamically loaded O-Ring
  • Extended service life
  • No damage caused by dirt entered during assembly
  • Straightforward and easy installation due to pre-assembled unit
  • Individual adaptation to pump design possible
  • Customer specific versions available

Operating range

Shaft diameter:
d1 = 25 ... 100 mm (1.000" ... 4.000"
Other sizes on request
Temperature:
t= -40 °C ... 220 °C (-40 °F ... 428 °F)
(Check O-Ring resistance)

Sliding face material combination BQ1
Pressure: p1 = 25 bar (363 PSI)
Sliding velocity: vg = 16 m/s (52 ft/s)

Sliding face material combination Q1Q1 or U2Q1
Pressure: p1 = 20 bar (290 PSI)
Sliding velocity: vg = 10 m/s (33 ft/s)

Barrier fluid circulation system:
p3max = 25 bar (363 PSI)
Δp (p3 - p1)ideal = 2 ... 3 bar (29 ... 44 PSI),
7 bar (102 PSI) for barrier media with poor lubricating properties.

Pump startup:
Δp (p3 - p1)max = 25 bar (363 PSI) allowed

Recommended supply medium:
max. ISO VG 5
Axial movement: ±1.0 mm, d1 ≥75 mm ±1.5 mm

Materials

Seal face: Silicon carbide (Q1), Carbon graphite resin impregnated (B), Tungsten carbide (U2)
Seat: Silicon carbide (Q1)
Secondary seals: FKM (V), EPDM (E), FFKM (K), Perfluorocarbon rubber/PTFE (U1)
Springs: Hastelloy® C-4 (M)
Metal parts: CrNiMo steel (G), CrNiMo cast steel (G)

Standards and approvals

  • Compliant to TA Luft (German Clean Air Act)

Recommended piping plans

The EagleBurgmann QFT1000 buffer system and QFT2000 vessels are suitable for Cartex-DN in back-to-back arrangement. The EagleBurgmann TS1016 and TS2000 thermosiphon systems support double and back-to-back seal configurations.

Product links:
EagleBurgmann QFT1000
EagleBurgmann QFT2000
EagleBurgmann TS1000
EagleBurgmann TS2000
EagleBurgmann MultiFlow Unit (MFU)
EagleBurgmann BestFlow

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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