MBS682-PTA

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MBS682-PTA

MBS682-PTA
Request product
Item Description
1, 14 Seal ring with bellows unit
2, 8, 15, 21, 25 Graphite ring
3 Collar
4, 17 Spring washer
5, 18, 23 HSH Cap screw
6, 19, 29 Set screw
7, 20 Mating ring
9 Clamp sleeve
11, 22 Gland plate
12 Gasket
16 Pumping ring
24 Seal sleeve
26 Drive collar
27 Pin
28 Clamping sleeve
30, 32 Hexagon bolt
31 Setting device


F Flush
LBO Liquid barrier/buffer OUT
LBI Liquid barrier/buffer IN

MBS682-PTA

Features

  • API 682 Category 2 and 3, Type C, Arrangement 2 and 3 seal
  • Dual seal in face-to-back arrangement
  • Balanced
  • Cartridge unit
  • Rotating metal bellows
  • Shrink fitted seal rings and solid mating rings

Advantages

  • Compact design
  • Suited for applications with extreme high and low temperatures
  • Absence of dynamic O-Ring eleminates/reduces seal face hang-up
  • Bellows design minimizes variation in face load due to shaft expansion or face wear
  • Resistant to abrasive particles in the medium, no shaft or sleeve fretting
  • Also available in double ply design

Operating range

Shaft diameter: d1 = 20 ... 110 mm (0.79" ... 4.33")
Pressure single ply bellows: p = vacuum ... 25 bar (... 363 PSI)*
Pressure double ply bellows: p = vacuum ... 35 bar (... 508 PSI)
Temperature: t = -75 °C ... +400 °C (-103 °F ... +752 °F)
Sliding velocity: vg ... 23 m/s (... 75 ft/s)
<

* p >20 bar (290 PSI) on request.

Materials

Seal rings: Blister resistant carbon,
Silicon carbide SSiC (Q1), RBSiC (Q2)
Mating rings:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Bellows: Inconel® 718 (M6)
Secondary seals: Graphite (G)
Metal parts: CrNiMo steel 316 (G),
Carpenter® 42 (T4)

Standards and approvals

  • API 682 / ISO 21049
  • API 682 4th ed. Cat. 2/3 - 2CW-CW
  • API 682 4th ed. Cat. 2/3 - 3CW-FB

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The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

EagleBurgmann WORLDWIDE