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PP - D

Mechanical Seals for Pumps

Product Description

  • Balanced
  • Double pressure balanced
  • Dual seal
  • Independent of direction of rotation
  • Internal barrier fluid circulation
  • No dynamic O-Ring on shaft
  • Shrink-fitted seal faces
  • Seal faces have a large clearance to the shaft
  • Semi cartridge unit
  • Static springs on both sides

Details

Item No. Description
1 Seal face
5 Seat
13 Sleeve
16 Housing
18 Pin
37 Assembly fixture
2, 12, 15, 22, 23, 24, 25 O-Ring
43 Plug

Technical Features

  • Can be used with pressurized buffer fluid or with quench
  • No damage of the shaft by dynamically loaded O-Rings
  • Seal faces protected by strong steel parts
  • and a large radial clearance
  • Static springs on both face sides reduces influence of misalignment
  • The dual seal can also be used as single seal
  • by removing the atmospheric seal parts

Typical Industrial Applications

  • Pulp and paper industry
  • Chemical industry
  • Clean, abrasive or corrosive liquids
  • Stocks of various kind
  • Applications where crystallization is a problem

Materials

Seal face: Silicon carbide (Q12), Carbon (A)
Secondary seals: FKM (V), EPDM (E),
FFKM (K)
Metal parts: CrNiMo steel (G),
Grade 5A (4T), SMO 654 (4U

Performance Capabilities

Temperature: t = -20 °C ... +140 °C (-4 °F ... +284 °F)
(180 °C (356 °F) with FFKM elastomers)
Pressure: p1 ... 25 bar (363 PSI), p3
Sliding velocity: vg ... 20 m/s (66 ft/s)
Stock content:
Non-flow operation:
Temperature: t = +5 °C ... +100 °C
(+41 °F ... +212 °F) Pressure: p1 max. 10 bar (145 PSI), p3 > p1
Sliding velocity: vg ... 20m/s (66 ft/s)

CTX ANSI Single Seals
 
 
 
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
Gas Lubricated Seals for Pumps & Agitators
API 682 / ISO 21049
Technical Information