Tides Marine manufactures the SureSeal range of dripless, self-aligning shaft seals, and rudder seals, that are standard equipment on many American, Australian and New Zealand built boats.

The lip seal is carried in a one-piece, fibre-reinforced composite housing that also houses a water lubricated PTFE shaft alignment bearing.

The housing is connected to the stern tube by an articulating hose, resulting in a very simple installation, and a self-aligning fitting. The flexible hose reduces the side loads on the seal if shaft misalignment occurs, and extends the life of the bearing and lip seal.

A spare lip seal can be installed in a compact housing (small collar) when the bearing housing is installed, or when an original seal is replaced with a new one. The spare-seal carrier is fixed to the shaft ahead of the bearing carrier, and it rotates with the shaft. This allows the spare shaft seal to be installed without the need to uncouple the shaft, or the expense of removing the vessel from the water.

  • GMS Store sells complete SureSeal packages for new installations or refits, and spare parts to maintain existing installations. When making an enquiry, we ask about the shaft size (metric or imperial size), and the outside diameter of the stern tube / shaft log.
  • GMS Service is available to fit and service any shaft seal or stern gland.