Features ecartex dual seal
- 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 ecartex dual seal
- The series has sliding surfaces that are equipped with EagleBurgmann DiamondFace technology as standard
- Up to 80 % less energy consumption and minimized heat generation of seal due to friction-reducing DiamondFace layer
- Up to 100 % extended operating period, prolongation of MTBF and MTBR intervals
- Significantly improved dry-run capability for inadequately lubricated sealing surfaces, thus vastly improved process safety
- Universally applicable, even with high solids content in the medium
Operating range ecartex dual seal
- 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 from 75 mm ±1.5 mm
Materials ecartex dual seal
- Seal face product side: Silicon carbide DiamondFace® (Q15)
- Seat product side: Silicon carbide DiamondFace® (Q15)
- Seal face atmospheric side: Carbon graphite resin impregnated (B)
- Seat atmospheric side: Silicon carbide (Q1)
- Secondary seals: FKM (V), EPDM (E), FFKM (K), Perfluorcarbon rubber/PTFE (U1)
- Springs: Hastelloy® C-4 (M)
- Metal parts: CrNiMo steel (G), CrNiMo cast steel (G)
| 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 |
Recommended applications ecartex dual seal
- Petrochemical industry
- Chemical industry
- Pharmaceutical industry
- Power plant technology
- Pulp and paper industry
- Mining industry
- Food and beverage industry
- Sugar industry
- Universally applicable
- Centrifugal pumps
- Eccentric screw pumps
