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SPX
Mechanical Seals For Pumps

Product Description

  • Balanced
  • Bi-directional
  • Built-in flushing connections
  • External pressurization
  • Fully split single seal, 2 X 2 segments, preassembled
  • Installation and wear control
  • Semi-cartridge
  • Stationary springs

Details

Item Description 
1 Seal face
2, 5, 7 O-Ring
3 Spring
4 Seat
6 Driver
8 Thrust ring
9 Clamp collar
10 Housing
11 Assembly fixture
12, 15 Gasket
13 Head screw plug
14 Mounting plate
16 Set screw
17 Socket head screw

Technical Features

  • Dependable operations: mechanical decoupling of clamping ring (torque transmission) avoids distortion of the seat.
  • Greater flexibility during installation: no modification necessary because the seal is located outside of the stuffing box.
  • High tolerance to shaft deflections ensured by stationary design and elastic seat mounting (gasket).
  • Low leakage: elimination of seacondary seals eliminates leakage paths between split components.
  • Shaft protection: uniform torque transmission via clamping ring prevents damage caused by set screws.
  • Springs which are protected from the product prevent clogging.

Typical Industrial Applications

  • Agitators
  • Chemical Industry
  • Centrifugal pumps
  • Conveying pulp with stock pumps
  • Cooling water pumps for energy generation
  • Conveying timber to refiners with pumping screws
  • Circulation of pulp-and-water mixtures in storage vessels
  • Displacement pumps
  • Process industry
  • Petrochemical Industry
  • Power Plant Technology
  • Pulp and paper industry
  • Pump stations for waste water treatment

Materials

Seal face: Carbon graphite antimony impregnated (A),
Silicon carbide (Q6)
Seat: Silicon carbide (Q6)
Secondary seals: FKM (V), EPDM (E), NBR(P)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G)

Performance Capabilities

Shaft diameter: d1 = Upto ...150 mm (Upto ... 6.000’’)
Pressure: p1 = 10 bar (145 PSI)
Temperature: t = -40 ... +150 °C (- 40 ... + 300 °F),
above 80 °C (175 °F) flush is recommended
Sliding velocity: Vg = 10 m/s (33 ft/s)
Axial movement: ± 1.5 mm (1/16")
Radial movement: ± 0.8 mm (1/32")

U300N
 
 

Standard Cartridge Seals

Mechanical Seals As Per API 682

Split Seals

Engineered Seals For Demanding Applications

Standard Mechanical Seals For Pumps & Compressors

Mechanical Seals For Agitators, Mixers, Kneaders & Reactors

Supply Systems & Components

API 682 / ISO 21049

Technical Information