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Liquid-lubricated double seal for top-entry drives
Cartridge unit
Self-closing on the product side
For stepped and unstepped shafts
Unbalanced
Independent of direction of rotation
Multiple springs rotating
Advantages
Ready-to-fit and factory-tested units
The M481K and its variants will remain closed even during pressure variations or pressure reversal. Operation is possible with buffer fluid (p1max = 6 bar (87 PSI)) or pressurized with barrier fluid as double seal
Available with or without bearing
Suitable for standardizations
Seal can be applied at higher pressure and rotating speed than specified by DIN
For applications beyond this range, please inquire.
* with cooling flange
! It should be noted that the extremal values of each
operating parameter cannot be applied at the same time
because of their interaction.
Materials
Seal faces: Carbon graphite or Silicon carbide, FDA conform
Seats: Silicon carbide, FDA conform
Secondary seals and metallic parts acc. to application and customers' requirement.
Standards and approvals
FDA
ATEX
DIN 28138 (mechanical seals for agitator shafts)
DIN 28136 T2 (for steel vessels)
DIN 28141 (flange connection for steel vessels)
DIN 28154 (shaft end for steel vessels)
Recommended applications
Refining technology
Petrochemical industry
Chemical industry
Pharmaceutical industry
Food and beverage industry
Agitators
Reactors
Notes
Options:
Cooling resp. heating flange
Leakage drain
Flush
Polymerization barrier
Axial expansion joint (shaft movement)
Wiper ring (shaft movement)
Please inquire.
Recommended piping plans
Closed circuit EagleBurgmann TS system,
open circuit EagleBurgmann SPA, SPN
M451K
Variant for unstepped shafts or customer-specific connection dimensions. The seal is available for any diameter. Further customer-specific adaptations are also possible.