SIMPLEX sterntube seals (stern tube seals)

Seals for oil and water lubricated sterntubes

Compact (SC1) and Compact 2000 (SC2)
Size 155 - 1250 non split version
Size 140 - 1000 split version

Conventional
No longer manufactured - but spares are available
Size 155 - 800

SIMPLEX-COMPACT airspace sealing system

Airspace seal

This anti-pollution seal uses four self-supporting lip rings and incorporates an air chamber with controlled venting an no loss of air into the seawater. The system also has the ability to be switched over to a standard seal with a pressure control system in times of emergency.

As with other Simplex seals the lip rings can be replaced without uncoupling the tail shaft or removing the propeller.

This airspace seal installation diagram shows the latest standard with a pipe connection between seal and oil tank at the bottom of the seal and an additional oil chamber vent pipe connected on top of the seal. This revised design offers the opportunity to fill the oil chamber via the oil tank and vent the chamber at the same time.

SIMPLAN sterntube seals (stern tube seals)

For small shaft diameters and water lubricated sterntubes, vessels using inland water ways, coastal vessels, yachts and high speed naval or coastal protection applications.

Bulkhead seals

Shaft diameters 50 mm - 800 mm

Net pick up

This simple but effective component catches any fishing line or netting not kept off the seal by the rope guard. Any net or line is caught in the net pick-up channel and is so prevented from reaching the seal box without affecting the flow of water to the propeller.

Netting and fishing lines not kept off the rope guard are taken up by the net protection ring with its U-shaped cross-section. With increasing amounts of netting or lines filling up the ring the entry gap decreases and finally closes completely, so preventing access to the SC2 seal.

Rudder stock bearings and seals

Rudder stock sealings and carrier bearings

Size 155 - 710 - but custom design is also available

SIMPLEX sterntube bushes (stern tube bushes)

White metal bearings up to a length of 2,800 mm at an outside diameter of 1100 mm. Larger sizes are available on request.