DryMax® Shaft Seal

The DryMax® Stern Tube Seal System is a water-lubricated shaft sealing solution engineered to keep water out, protect the propulsion shaft, and reduce maintenance in demanding marine applications. Designed and built in the USA, DryMax® uses a robust hydrodynamic axial seal design that eliminates shaft wear associated with traditional radial lip sealing systems while delivering long service life and dependable sealing performance. It operates without grease or oil, helping vessel owners maintain a cleaner, more environmentally friendly propulsion system.

• Water-lubricated stern tube seal system for cleaner, environmentally friendly operation.
• Eliminates shaft wear caused by traditional radial lip sealing systems.
• Uses no grease or oil to help reduce pollution risk and maintenance requirements.
• Fits propeller shafts from 3.5" to 15" diameter.
• Accommodates axial and radial shaft movement while maintaining a waterproof seal.
• No adjustment required — uses seawater draft pressure to maintain sealing force.
• Heavy-duty cast bronze housing and components selected for corrosion resistance and long service life.
• Split, reversible DuraChrome® Mating Ring supports easier seal changeout and extended dry dock intervals.
• Inflatable air seal permits service at sea and helps prevent seawater from entering the vessel during seal replacement.
• Includes active and spare seal rings on the shaft for faster maintenance when needed.
• Can replace an existing shaft seal and can be adapted for retrofit installations.
• Includes shaft earthing assembly to help prevent shaft corrosion.
• Engineered for clean and dirty water service for dependable operation in tough marine environments.
• ABS type approved and Lloyd’s Register approved product.