Item Description
1 Seal face
2 Mating ring
3 Collar
4 Face housing
5 Clamp ring
6 Springs
7 Housing
8 Gasket
Clamp ring

Type 4600


The water-lubricated stern tube seals type 4600 from EagleBurgmann are not alone an environment-friendly solution. They meet all technical requirements of modern sealing technology: modular design, convenient installation, little maintenance, no adjustments.
Type 4600 water-lubricated stern tube seals are virtually leak-free and are leaving no oil or grease residues in the waterway. And because they prevent getting water into the bilge, no elaborate actions are required for its disposal.
Please ask us for references.


  • Water-lubricated
  • No oil or grease emissions to the environment
  • Low power consumption
  • Carbon seal face unsplit for first installation, split for repairs
  • Version with split mating ring available

Operating range

Shaft diameter:
d1 = 50 … 320 mm (1.97" … 12.60")
Pressure: p = 2 … 7 bar (29 ... 102 PSI)
t = -5 °C … 40 °C (23 °F… 104 °F)
Speed range: n = see diagram

Allowed shaft movements
Axial: ±5 mm,
Radial: Shaft diameter (d1) up to 200 mm: ±2 mm,
>200 mm: ±3 mm

Flushing: approx. 1 l/h per Millimeter of shaft diameter (d1)


Seal face: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B)
Mating ring: Special cast CrNiMo steel
Collar: Nitrile-butadiene rubber (P)
Face housing: 1.4571 (G)
Clamp ring: 1.4572
Springs: Hastelloy® C-4 (M)
Housing: Bronze / 1.4571
Gasket Burasil® (Y)


Special designs available:
  • Split mating ring
  • Amagnetic properties
  • Shock resistance