Dual seals Cartex

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

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)

Technical informations

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)

Barier fluid cyrculation system:

p3_max = 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