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Mechanical Engineering
Shaibaj Sayyad

Which seal is best for screw pump Sealing

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In the case of a triple screw pump, shaft seals are only needed on the driving rotor. The other rotors, including their bearings, are encased inside the pumping chamber and do not protrude out. In the case of a two screw pump or a four screw pump, both rotors generally protrude through the pump case, into a gearcase where the timing gears are housed. For this reason, four shaft seals are needed in a screw pump with two rotors.

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