Ctx Dual Seals

Technical Features

Ideal for use in process pump standardization
O-ring is dynamically loaded to prevent shaft damage.
Dimensional modification of the stuffing box chamber is not required due to short radial installation height
Ideal to convert and retrofit pumps with packings and large volume OEM production
Cartridge unit factory assembled for easy installation, which reduces down- time
Rugged design for long operating life

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)

Performance Capabilities

Sizes: d₁ = Upto 100 mm (Upto 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)
Speed = 16 m/s (52 ft/s)
Sliding face material combination Q1Q1 or U2Q1
Pressure: p₁ = 20 bar (290 PSI)
Speed = 10 m/s (33 ft/s)
Barrier fluid circulation system:
p_3max = 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
Permissible axial movement: ± 1.0 mm,
d₁ ≥ 75 mm ± 1.5 mm

Standard Cartridge Seals
CTX Dual Seals