LY9DZSS

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LY9DZSS

LY9DZSS
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Item Description
1 Seal ring with bellows unit
2, 5, 12, 16 O-Ring
3, 14, 19, 20 Set screw
4 Mating ring
11 Seal sleeve
13 Pumping ring
15, 17 Gland plate
18 Drive collar
21 Setting device
22 HSH Cap screw


LBO Liquid barrier OUT
LBI Liquid barrier IN

LY9DZSS

Features

  • API 682 Category 2 and 3, Type B, Arrangement 3 seal
  • Dual seal in back-to-back arrangement
  • Same seal size of inboard and outboard seal
  • Balanced
  • Cartridge unit
  • Rotating metal bellows
  • Shrink fitted seal rings and solid mating rings

Advantages

  • Compact design
  • Bellows design allows use of balanced seal with plain sleeve
  • 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
  • Low heat generation and power consumption due to narrow seal face width
  • Longer seal life

Operating range

Shaft diameter: d1 = 20 ... 110 mm (0.79" ... 4.33")
Pressure: p = vacuum ... 20 bar (290 PSI)
Temperature: t = -40 °C ... +200 °C (-40 °F ... +392 °F)
Sliding velocity: vg ... 23 m/s (75 ft/s)

Materials

Seal rings: Blister resistant carbon
Mating rings:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Bellows: Hastelloy® C-276 (M5),
option: Inconel® 718 (M6)
Secondary seals:
FKM (V), FFKM (K), EPDM (E), NBR (P)
Metal parts: CrNiMo steel 316 (G),
Hastelloy® C-276 (M5)

Standards and approvals

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

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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