even in case of incidents or absence of maintenanceThe H. Seal Ts is the only product available that is able to guarantee absolute safety.Traditional systems (face and water seal) require costants checks and regular maintenance(substitution components); moreover they don’t support numerous incidental events; in a boatan obstruction of a water cooling is always possible (many seals completely burned…), in a boatincidents involving the propeller shaft are always possible (many seals completely destroyedby an axial movement of the shaft, or by anomalous vibration of the shaft…), in a boatmarine incrustations are always possible (many rubber sleeves destroyed by incrustations onthe shaft… or by a water seal bearing stick on the shaft). The H. Seal Ts is always safe, even ifthere is no oil and grease (incidents or absence of maintenance…)
resistance to sandy waterThe H. Seal Ts is unique and always dry. Traditional system (face and water seals) require alittle leakage of water. Often during the first working hours you cannot see that leakagebecause water is immediately vaporised in the bilge (frictions are very important in that seal);but rapidly by the action of the sand and marine incrustations the vaporisation change into asprinkling of water. The H. Seal Ts is the unique seal that preserves the engines from acorrosive environment
no oil leaks into the sea
The oil reservoir of the H. Seal is positioned under the water sea level; so the pressure of thewater is higher than that of the oil; when oil seal become holds (after many thousands ofworking hours) it happens just a little passage of the water in the oil, and no a leakage of oilinto the sea.
The H. Seal is available with inflatable seal in order to allow the maintenance with the boat into che water.
H. Seal Patent: oil circulation, double dry stage, self-aligning bearingThe H. Seal may be considered the evolution of traditional oil systems used in ships.H. Seal bearing has a special interior profile that creates an oil pumping with therotation of the propeller shaft.The oil circulation ensures the creation of an oil film between the shaft and thebearing, and almost between the shaft and the oil seal: no friction and excellentdurability of the oil seal. On the sea side, the H. Seal has a patented greasechamber that protect oil seals from sand and ropes (fishing-lines…).The water pressure prevents the escape of the grease from the H. Seal. The H. Sealis connected to the stern tube in a flexible way by a strong coupling joint with doublearticulation, this in order to absorb vibrations and misalignments of the propeller shaft.The hardy metal structure of the H. Seal guarantees a reliable working in everycondition, even without oil.
The H. Seal Ts may be installed on any existing stern tube without any modification.For new boats the H. Seal Ts may be supplied complete of stern tube. The installationis very easy and no adjustments are required
The unique technical characteristics of H. Seal allow to solve problems in many industrial fields (steel industries, paper mills… ).
Our technical department is able to offer a customized solution for each specific application (pressure, fluid, temperature, rpm…).
We also realize special seals for standard ISO pumps.
The specific technical features are the following:
RINA
approval mac/217/94
VERITA
Sapproval 09714/AO BV
U.S.A.
PATENT n° 5.795.198
EUROPEAN
PATENT n° 0770017
REXMAR srl
Via Molinetto, 16-18-20
Città – Cogoleto –
CAP 16016
Provincia – Genova -Stato – Italy –
REXMAR srl
TEL +39 010 918 17 84
FAX +39 010 918 28 54
Mail info@rexmar.it