H12N

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H12N

H12N
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Item Part no. to
DIN 24250		 Description
1.1 472/473 Seal face
1.2 412.1 O-Ring
1.3 474 Thrust ring
1.4 478 Righthand spring
1.4 479 Lefthand spring
2 475 Seat (G9)
3 412.2 O-Ring

H12N

Features

  • For stepped shafts
  • Single seal
  • Balanced
  • Dependent of direction of rotation
  • Torque transmission via conical spring

Advantages

  • High flexibility due to extended selection of materials
  • Insensitive to low solids contents
  • Short Installation length possible (G16)
  • Economical balanced seal
  • Seat cooling for hot water applications available (G115)
  • No damage of the shaft by set screws

Operating range

Shaft diameter:
d1 = 10 ... 80 mm (0.4" ... 3.125")
Pressure: p1 = 25 bar (363 PSI)
Temperature:
t = -50 °C ... +220 °C (-58 °F ... +430 °F)
Sliding velocity: vg = 15 m/s (50 ft/s)
Axial movement: ±1.0 mm

Materials

Seal face: Carbon graphite antimony impregnated (A)
Seat G9: Silicon carbide (Q1), Special cast CrMo steel (S)

Standards and approvals

  • EN 12756


Product variants

H12
Dimensions, items and descriptions as for H12N, but with seat G16.
Seal face: Carbon graphite antimony impregnated (A)
Seat G16: Silicon carbide (Q1), CrMo cast steel (S), Aluminium oxide (V)
H17GN
Dimensions, items and descriptions as for H12N, but with shrink-fitted seal face (Q12), item no. 1.1.
Temperature: t = -20 °C ... +180 °C (-4 °F ... +356 °F)
Seal face: Silicon carbide (Q12)
Seat G9: Silicon carbide (Q1, Q2), Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B)
H17G
Dimensions, items and descriptions as for H12N, but with shrink-fitted seal face (Q12) and seat G16.
Temperature: t = -20 °C ... +180 °C (-4 °F ... +356 °F)
Seal face: Silicon carbide (Q12)
Seat G16: Silicon carbide (Q1)

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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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