H75A4-B

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H75A4-B

H75A4-B
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Item Description
1.1.1, 1.1.2 Seal ring
1.1.3 Driver
1.1.4, 1.1.5 Thrust ring
1.1.6, 1.1.7, 1.3, 1.5 O-Ring
1.1.8 Spring
1.1.9, 7 Set screw
1.2, 1.4 Mating ring
3 Seal sleeve
4, 5 Gland plate
6 Set ring
8 Setting device
9 Hexagon bolt


LBO Liquid barrier OUT
Q Quench
LBI Liquid barrier IN
D Drain

H75A4-B

Features

  • API 682 Category 2 and 3, Type A, Arrangement 3 seal
  • Dual seal in back-to-back arrangement
  • Balanced
  • Cartridge unit
  • Rotating multiple springs
  • Integrated pumping device
  • Suitable for pressure reversals
  • Replaces the H75VK seal

Advantages

  • Universally applicable both for retrofits or original equipment
  • Efficient stock keeping due to standardized components
  • Extended selection of materials
  • Extended field of operation in terms of temperature and pressure
  • Metal parts also in special materials available
  • Safe operation due to metal torque transmission at the rotating carbon seal rings

Operating range

Shaft diameter:
d1 = 20 … 110 mm (0.79" … 4.33")
Pressure: p1 = 42 bar (609 PSI)
Temperature:
t = -40 °C … +176 °C (-40 °F … +350 °F)*
Sliding velocity: vg = 23 m/s (76 ft/s)
Axial movement:
d ≤50 mm ±1.0 mm
d >50 mm ±1.5 mm

* 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:
EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: C-276 (M5)
Metal parts: CrNiMo steel 316 (G) or equivalent,
optional materials on request.

Standards and approvals

  • API 682 / ISO 21049
  • API 682 4th ed. Cat. 2/3 - 3CW-BB
  • Compliant to TA Luft (German Clean Air Act)

Recommended piping plans

Process side*:
API Plan 01
API Plan 02
API Plan 03
API Plan 11
API Plan 12
API Plan 13
API Plan 14
API Plan 21
API Plan 22
API Plan 31
API Plan 32
API Plan 41

Between seals:
API Plan 53A
API Plan 53B
API Plan 53C
API Plan 54

Atmospheric side**:
API Plan 61
API Plan 62
API Plan 65A
API Plan 65B

* Piping plans 11 ... 41: Integration in seal to be dimensionally checked.
** Throttle bushing on request.

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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.

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