Water Lubricated Gland

The water lubricated gland is used in installation where an intermediate bearing is required on the inboard end of the sterntube. It is also fitted as standard equipment by many builders of twin powerboats where it acts as an intermediate bearing between the ‘P’ bracket and the gearbox as well as forming a watertight seal at the point where the propeller shaft enters the hull.

The gland body is fitted with a half length (2 x shaft diameter) Aqualube water lubricated bearing, and a lantern spray ring to ensure the bearing receives an even supply of water.

As this type of shaft seal utilizes replaceable packing it should be installed in the boat with sufficient clearance between the gland studs and the gearbox coupling to permit the replacement of the packing without uncoupling the shaft.

On installation the gland should be tightened equally on the studs to ensure it does not bear on the shaft. The gland should not be bear on the shaft. The gland should not be overtightened as this will wear the shaft in way of the packing and destroy the sealing area.