HB4604 Mechanical Seal

Mechanical seal H-brinker

Shaft diameter: d1 = 50 … 320 mm (1.97″ … 12.60″)

Water pressure: p = max. 2 bar (29 PSI)

Barrier pressure: min. 0.2 bar (2.9 PSI) above water pressure

Temperature: 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)

The water-lubricated stern tube seals for closed systems HB 4604 from are not alone an environment-friendly solution. They meet all technical requirements of modern sealing technology: modular design, convenient installation, little maintenance, no adjustments.
hb4604 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.

Seal face:
Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B)
Mating ring: Special cast CrNiMo steel (S) / 1.4462
Collar: Nitrile-butadiene rubber (P)
Face housing, clamp ring: CrNiMo steel (G)
Springs: Hastelloy® C-4 (M) /1.4401
Housing: 1.4571 / Bronze
Gasket: Burasil® (Y)