Cartridge mechanical seal
for agitatorsfor mixersfor corrosive liquids

cartridge mechanical seal
cartridge mechanical seal
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for agitators, for mixers, for corrosive liquids, for viscous liquids
chemical process, process, for the pharmaceutical industry, for the petrochemical industry
Other characteristics
double, gas-lubricated, high-performance, for chemicals, for high-temperature applications, for high-pressure applications
Operating pressure

Max.: 150 bar (2,176 psi)

Min.: 1 bar (15 psi)

Operating temperature

Max.: 300 °C (572 °F)

Min.: -50 °C (-58 °F)


Mechanical Seals play an important role in the chemical process industries. These devices prevent product leakage and toxic emission during the mixer service under pressure. Since the mechanical seal life is strictly connected with the mixer design, our engineers are always studying new improved sealing arrangements with the cooperation of all major mechanical seal companies in order to provide the most complete service and support. ZUCCHETTI designs and realizes the mechanical seal cartridge with the proper bearing to load the dynamic hydraulic forces produced by the impellers. Mechanical seals elements are selected from the best seal international companies. The mechanical seal cartridge can be supplied with the following accessories: • Seal Change Device The drives are designed with spacer and supporting ring in order to dismount and replace the mechanical seal cartridge on site without disconnection of motor or gearbox removal. Arm system and special mechanical devices are supplied to lift and remove the seal cartridge/spacer shaft/coupling from the housing • Seal shut-off & Tank shut-off device The seal shut-off device can be supplied in case the seal cartridge is requested to be replaced with the reactor under pressure. All the side entering mixers are equipped with a standard tank shut off device for seal maintenance with tank full of liquid • Mechanical seal lubrication Unless the dry-running seals, the lubrication is made with one of the following devices: • Gas lubrication • Pressureless oil pot which lubricate the seal faces by capillary action • Oil pot pressurized to a level higher than the operation pressure in the reactor


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