Ocean Venture Seals (OVS)has developed the Eco-Seal - a revolutionary new design in
propeller shaft sealing technology
The environmentally friendly Eco-Seal is a major advance in propeller shaft
sealing technology because its design means there is no oil leakage to the
environment from the propeller shaft and no contamination of the sterntube
oil by sea water.
Any small leakages of oil or water are contained in the Eco-Seal's casing
and drained inboard, with any leaked fluids being handled as bilge water.
Colin Drew, OVS sales and marketing director, says: "As well as providing
commercial and environmental gains for shipowners, the Eco-Seal's green
design puts to rest the image of vessels polluting the environment with a
thin line of oil following
the ship everywhere it sails. With the spotlight
of ever tightening environmental legislation regularly being aimed at
shipping, shipowners are becoming increasingly aware of the benefits of
keeping legislators on-side."
The second major advantage of the Eco-Seal is that it has fully split
construction which allows all repair and maintenance activities to be
carried out with the propeller and propeller shaft remaining in place. In
many cases the seal can be repaired underwater. This eliminates the need for
any towing and drydocking expenses, which are always a large proportion of
any repair bill. It also means that the vessel can be repaired much faster -
'on site' in the water.
The seal has an extremely high resistance to damage and failure due to
ingress of foreign material and the design of the seal also allows large
axial movements of the propeller shaft due to thermal expansion without any
alteration in sealing face pressure. This enables the optimum balance
between sealing function and low wear rates.
Drew adds: "Low installation costs, low rates of wear and minimal repair and
maintenance costs make the Eco-Seal extremely attractive from a commercial
point of view."
The Eco-Seal can be adapted to fit onto almost any type of ship - ranging in
size from ULCC to offshore support vessel.