SLURRY PUMP MECHANICAL SEALS
Slurry seals
Overview
In the harsh and demanding environment of slurry applications, John Crane’s slurry seals are engineered to deliver maximum equipment reliability, durability and performance.
Our slurry mechanical seals are designed to resist the destructive effects of ore, limestone, phosphates, kaolin clay, lime mud, boiler fly ash, rock salt, sludge, sand and gravel.
With wear-resistant hardware and advanced sealing technology, John Crane slurry seals are designed to maintain stable face alignment and reduce wear, helping to extend the mean time between repair (MTBR) and minimise unplanned downtime.
Explore our slurry seal solutions
Type 5840
Cost-effective Cartridge Slurry Seal
Our Type 5840 single-cartridge seal encompasses many of the advantages associated with heavy-duty seal design, encased in a cost-effective package...
Type 5860
Heavy-duty Cartridge Slurry Seal
Available as a single or double seal, the Type 5860 is designed to operate in the harshest abrasive slurry environments...
Type 5870
Flushless Cartridge Seal
The Type 5870 is a single, balanced, O-ring pusher cartridge seal. It is designed to operate unsupported in all paper stock consistencies...
IN MORE DETAIL
What is a slurry seal?
In industrial applications, a slurry seal is a mechanical sealing device engineered for rotating equipment operating in harsh, abrasive environments.
Installed in slurry pumps, slurry seals are designed to withstand high solids content. These seals are critical for maintaining equipment integrity and minimising unplanned downtime.
Why choose John Crane for slurry sealing?
As a company that provides slurry seals, John Crane provides proven sealing technology backed by global service, expert engineering support and industry-leading reliability.
Our solutions are trusted by operators in mining, pulp and paper, chemicals and more.
John Crane Performance Plus™
John Crane Performance Plus™ is our modular service framework, supported by the largest mechanical seal service network, with over 200 manufacturing, sales and service centres globally. That means we are where you need us, when you need us – empowering people, plant and performance.
Common questions
What is slurry sealing?
Slurry sealing is the process of controlling leakage and protecting rotating equipment by using engineered mechanical seals designed for abrasive slurry media. John Crane’s slurry sealing solutions manage solids, stabilise seal faces and reduce wear, ensuring reliable operation and extended uptime in demanding industrial and mining environments.
What applications are John Crane slurry seals designed for?
John Crane slurry mechanical seals are designed for abrasive, solids-laden applications in mining, minerals processing, pulp and paper, chemicals and wastewater. Typical slurry pump seal uses include tailings trains, and dewatering of effluent, mud and gravel, as well as handling lime slurry, phosphates, kaolin clay, fly ash, sand and other severe-service slurries.
What is the difference between Type 1 and Type 2 slurry seal?
Type 1 and Type 2 slurry seals differ mainly in their construction and duty level. Type 1 slurry seals are typically used for moderate abrasive service, while Type 2 slurry seals offer enhanced wear resistance, stronger hardware and improved face stability for harsher, high-solids environments. Both are engineered to maintain alignment and extend equipment uptime.
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