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CMS Dual Standard Cartridge

Description

Our Standard CMS Dual Cartridge is a double, balanced, cartridge, and double pressure-balanced seal. It is considered independent of the direction of rotation, a closure with long useful life, economical and easy to install thanks to the pre-assembled unit (reduced downtimes). This integrated pumping device has variants available for eccentric screw pumps.

 The standard CMS Dual cartridge mechanical seal is ideal for standardizations since the shaft is not damaged by the dynamically loaded O-ring available to it. It is usually used in conversions of universal, retrofits, or O.E.M.

  • Chemical industry
  • Food and beverage industry
  • Petrochemical industry
  • Pharmaceutical industry
  • Universally applicable
  • Water and wastewater technology
  • Centrifugal pumps
  • Eccentric screw pumps


Technical characteristics


  • 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: 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
  • Permissible axial movement: ± 1.0 mm, d1 >= 75 mm ± 1.5 mm

Materials

  • Seal face: Sintered Silicon carbide (Q1), Resin impregnated Carbon (B), Nickel Tungsten carbide (U2)
  • Seat: Sintered Silicon carbide (Q1)
  • Secondary seals: FKM (V), EPDM (E), FFKM (K), NBR (N) / PTFE (T)
  • Springs: Hastelloy® C-4 (M)
  • Metal parts: CrNiMo steel (G), CrNiMo cast steel (G)

Downloads

Stramek
  • Factory and Headquarters
  • Sealmek Factory
  • Official Distributor