LL9DTUU

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LL9DTUU

LL9DTUU
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Item Description
1.1.1, 2.1.1 Seal ring
1.1.2, 1.1.6, 1.3, 2.1.2,
2.1.6, 2.3, 3, 5 O-Ring
1.1.3, 2.1.3 Spring
1.1.4, 2.1.4 Thrust ring
1.1.5, 2.1.5 Drive screw
1.1.7, 2.1.7 Collar
1.1.8, 2.1.8, 11 Set screw
1.2, 2.2 Mating ring
4 Seal sleeve
6, 8 Gland plate
7 Retaining ring
9 Hexagon bolt
10 Drive collar
12 Setting device
13 HSH Cap screw


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

LL9DTUU

Features

  • API 682 Category 2 and 3, Type A, Arrangement 2 or 3 seal
  • Dual seal in face-to-back arrangement
  • Same seal size on inboard and outboard seal
  • Balanced
  • Cartridge unit
  • Rotating multiple springs
  • Solid seal faces

Advantages

  • Compact design
  • Low heat generation and power consumption due to narrow seal face width
  • Longer seal life
  • Pressure-balanced design prevents mating ring being forced out under reverse pressure
  • No damage to shaft sleeve as dynamic
    O-Ring is not in direct contact with the sleeve

Operating range

Shaft diameter: d1 = 20 ... 110 mm (0.79" ... 4.33")
Pressure: p = vacuum ... 42 bar (... 609 PSI)
Temperature: t = -40 °C ... +176 °C (-40 °F … +349 °F)*
Sliding velocity: vg ... 23 m/s (... 75 ft/s)

* Engineered up to 260 °C (500 °F) with FFKM (K) secondary seals.

Materials

Seal rings: Blister resistant carbon,
Silicon carbide SSiC (Q1), RBSiC (Q2)
Mating rings:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Secondary seals:
FKM (V), FFKM (K), EPDM (E), NBR (P)
Springs: Hastelloy® C-276 (M5)
Metal parts: CrNiMo steel 316 (G), Duplex (G1)

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