Wartsila Launches New Seal For Environmental Lubricants

Wartsila has launched a new bio seal ring product for maritime stern tube seal applications for fixed pitched propeller systems.

The company said in a prepared statement that it is the first seal on the market that works with environmentally acceptable lubricants (EAL), sometimes known as bio-degradable oils, for a lifetime of at least five years.

Conventional seal rings are recommended to be changed at two and a half year intervals.

The benefits of the new seal are both environmental and economic, according to Wartsila. The extended operating life expectancy has a significantly positive impact on dry-dock scheduling and related costs.

The unique features of the bio seal ring have been achieved through improvements in the material formula by including new additives. The product has been tested extensively and proven in the Wartsila Seals and Bearings’ R&D facility.

The new product enables compliance with the U.S. Environmental Protection Agency’s (EPA) Vessel General Permit 2013 legislation which comes into force on Dec. 19, 2013. From this date all commercial vessels over 79 feet operating in U.S. waters will be required to use EALs in all oil to water interfaces unless deemed technically infeasible to do so.

Cruise Industry News Email Alerts

Cruise Industry News Email Alerts



Get the latest breaking cruise newsSign up.


51 Ships | 109,838 Berths | $35 Billion | View

New 2024 Drydock REPORT


  • Mkt. Overview
  • Record Year
  • Refit Schedule
  • 120 Pages
  • PDF Download
  • Order Today
New 2024 Annual Report


  • 2033 Industry Outlook 
  • All Operators
  • Easy to Use
  • Pre-Order Offer
  • Order Today