Click image to enlarge
| Item | Description |
|---|---|
| 1 | Seal face, atmosphere side |
| 2 | Seal face, product side |
| 6, 7, 13, 14, 15 | O-Ring |
| 11 | Seat, product side |
| 12 | Seat, atmosphere side |
M481K
Features
- 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
Operating range
Shaft diameter:
d1 = 40 ... 220 mm (1.57" .... 8.66")
Pressure:
p1 = vacuum ... 16 bar (232 PSI),
p3 = max. 18 bar (261 PSI)
Temperature:
t1 = -40 °C ... +200 (350*) °C
(-40 °F ... +392 (662*) °F)
Sliding velocity:
vg = 0 ... 5 m/s (0 ... 16 ft/s)
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)
- Compliant to TA Luft (German Clean Air Act)
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
Product links:
EagleBurgmann TS1000
EagleBurgmann TS2000
EagleBurgmann SPA
EagleBurgmann SPN manual
EagleBurgmann SPN automatic
Product variants
M481KL
Variant with integrated floating bearing
M451K
Variant for unstepped shafts or customer-specific connection dimensions. The seal is available for any diameter. Further customer-specific adaptations are also possible.
