Slurry seals
Metso's cartridge mechanical seals type BA and BF are designed to handle light to medium slurry duties.
For over ten years Metso has been successfully supplying mechanical slurry seals to various industry segments.
While the unique designs utilised have provided excellent results in all light to medium slurry applications, the growing demand for advanced and reliable sealing solutions
on even the heaviest of slurry applications, has resulted in the development of the improved H3 design of single and double mechanical seals.
HR/HM heavy duty pumps MR/MM mining duty pumps
Both seals can tolerate bearing cartridge adjustments of ±12 mm, without having to reset the seal.
The mechanical Slurry Seal is suitable for:
- Light to medium slurry application
- Completly interchangeable with any Metso standard shaft sealing arrangement.
Main benefits of the mechanical slurry seals:
- A new flexible fixing of the seal face and unique locking pin allow the seal to tolerate both vibration and excessive shaft deflection.
- Static and rotating seal parts exposed to slurry have been geometrically harmonised to minimize turbulence and secondary flow streams, thus reducing wear in heavy slurry applications.
- Patented design with the springs located on the atmospheric side, protected from both slurry and barrier liquid, eliminates hang-up problems or clogging of the springs. The design also accepts axial movements of up to ± 9 mm, enabling operators to take advantage of the Metso adjustment features without resetting the assembly.
Main features of the mechanical slurry seals:
- The dual balanced design can operate with pressurised barrier liquids, either higher or lower than the slurry pressure, while it’s unique hydraulic arrangement also allows the seal to operate under vacuum conditions.
- Seals are supplied with metal parts in AISI 316, springs in HASTELLOY™, O-rings in Viton™ and seal faces in a unique Silicon Carbide compound.
- Unique locking pin design, enables the two stationary sealing rings to effectively compensate for shaft deflection.
- The seal also allows axial movement of ± 9 mm, enabling operators to take advantage of the Metso impeller adjustment features without resetting the seal.
Patent number: 9000919-2.
We are the OEM (original equipment manufacturer) for equipment manufactured under the following brand names, and are the only supplier of parts with the original drawings and design details for: Metso, Svedala, Denver, Sala, Orion and Thomas slurry pumps.
Attachments:
Brochure Slurry Seal DE (725 kB) 
Brochure Slurry Seal EN (334 kB)
Brochure Slurry Seal ES (378 kB)
Brochure Slurry Seal FR (1211 kB)
Brochure Slurry Seal SE (425 kB)
Brochure Slurry Seal RU (398 kB)
