Stern Tube Bearing Seal Kits are essential components in marine propulsion systems, designed to prevent water ingress and lubricant leakage. These kits ensure smooth operation and longevity of stern tube bearings by maintaining proper sealing integrity. They are commonly used in ships to protect propulsion shafts from contamination and wear.

Size: Typically ranges from 50 mm to 800 mm shaft diameter.

Grade: Marine-grade compliant with ISO 9001 and ABS/DNV/GL standards.

Viscosity: Compatible with ISO VG 68 to VG 220 lubricants.

Buoyancy: Neutral buoyancy to prevent excessive friction or wear.

Material: Nitrile rubber (NBR), polyacrylate (ACM), or fluorocarbon (FKM) elastomers.

Pressure Rating: 3 to 10 bar, depending on design.

Temperature Range: -20°C to +120°C (varies by material).

Seal Type: Lip seals, mechanical face seals, or labyrinth designs.

Corrosion Resistance: Stainless steel (AISI 316) or bronze components.

Lubrication: Grease or oil-lubricated systems.

Installation: Bolt-on or cartridge-style assemblies.

Stern Tube Bearing Seal Kits for Marine Propulsion typically comply with maritime standards such as ISO 9001, ISO 14001, and classification society standards like ABS, DNV, LR, or BV, depending on the manufacturer and specific product specifications.