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The PSS Shaft Seal, manufactured for 25 years, uses the well-known system of mechanical seal in order to assure complete water tightness between the propeller shaft and the boat, unlike other brand which uses either a lip seal or a packing gland.
Because of its choice of material, the PSS Shaft Seal can operate in all kind of environment, including salty/sandy waters. Also unlike other type of seals there is no contact, therefore no wear, between the sealing surface and the shaft.
All these qualities make the PSS Shaft Seal the most common brand of Shaft Seals found on the pleasure boat industry today.
Less known is the fact that the PSS Shaft Seals are also very common on all type of work boats (Small ferries, crew boats, fishing boats, coast guards, tugs etc…) as these seals are manufactured for shafts up to 200mm. One huge advantage of these seals on a commercial boat is the lack of maintenance required added to the fact that these seal do not wear the shaft down.
The PSS is approved by RINA, VERITAS, and ABS.
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The PSS Shaft Seal, large model, manufactured for 15 years, uses the well-known system of mechanical seal in order to assure complete water tightness between the propeller shaft and the boat, unlike other brand which uses either a lip seal or a packing gland.
Because of its choice of material, the PSS Shaft Seal can operate in all kind of environment, including salty/sandy waters. Also unlike other type of seals there is no contact, therefore no wear, between the sealing surface and the shaft.
All these qualities make the PSS Shaft Seal the most common brand of Shaft Seals found on the pleasure boat industry today.
Less known is the fact that the PSS Shaft Seals are also very common on all type of work boats (Small ferries, crew boats, fishing boats, coast guards, tugs etc…) as these seals are manufactured for shafts up to 200mm. A big endorsment is the fact that the US Coast Guards use the PSS Shaft Seal. One huge advantage of these seals on a commercial boat is the lack of maintenance required added to the fact that these seal do not wear the shaft down.
The PSS is approved by RINA, VERITAS, and ABS.
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Complementing the more conventional shaft seals that are still widely used in the industry, Clements Marine principally recommend a complete range of non-metallic self-aligning shaft seals designed and produced by Tides Marine Inc in the U.S.A.
This innovative seal has become widely used recently in the UK leisure boat design by a number of the large builders. These seals have many performance enhancing characteristics but specifically their dripless and wear free performance over a guaranteed 2000 hour, or two year operating life. The components are manufactured using non-metallic composite materials which are dimensionally un-affected by temperature changes and will not become damaged by water absorbtion.
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Bronze dripless shaft seal with nitrile seal element. Available in sizes 1" to 3". Chatfield Blue Water seals are Germanischer Lloyd approved.
Chatfield Marine has developed a propeller shaft flexible seal unit designed to be retrofitted to existing stern tube assemblies or installed in new boats— the Blue Water Seal. This is a proven system that is NZ MSA approved for use in commercial boats and is now used as standard equipment by well known boat builders.
The seal element can be easily removed should it be damaged or need replacing with no need to replace the entire unit as new seals elements are readily available from our spare parts department
The Blue Water Seal has a built-in safety feature to keep sea water out of the boat. If the seal element is damaged the seal retaining plate can be converted into a gland follower by placing a ring of greasy hemp gland packing under it to form an effective temporary seal allowing a replacement to be fitted at leisure.
These water cooled units are manufactured from cast admiralty bronze, chosen for its excellent bearing and salt water resistant properties. They are available for 25-76mm (1”- 3”) shaft diameters.
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