New Face-type Sterntube Seals from Wärtsilä
Wärtsilä Corporation has introduced a new family of face-type seals specifically for water-lubricated stern tubes. These new Deep Sea Seals brand ManeGuard seals are ideally suited to vessels sailing frequently in coastal or other waters with high sand and silt contents. ManeGuard face-type seals are produced for shafts of 70 to 240 mm diameter, and are either partially (PS type) or fully (FS type) split. They are able to accept high shaft speeds up to 2700 r/min. The simple design is intended to provide maximum sealing capability for all types of water-lubricated bearings. For stern tubes with closed water systems, ManeGuard seals can be used both inboard and outboard.