Mechanical Seal Cartex ANSI Duall seal

Type in the Iseal : ISANSI-Duall

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

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

Advantages

Ideal for use in ANSI process pumps
Universal applicable for packings conversions, retrofits or OEM
Ideal seal for standardizations
No dimensional modification of the seal chamber 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

Features

Dual seal
Available for standard (Cartex-ASDN) and big bore (Cartex-ABDN) seal chambers
Cartridge
Balanced
Independent of direction of rotation
Double pressure balanced
Integrated pumping device

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)

Recommended applications