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Mechanical seals for pumps  >  Elastomer bellows seals

MG1


Features
  • For plain shafts
  • Single and dual seal
  • Elastomer bellows rotating
  • Unbalanced
  • Independent of direction of rotation
  • No torsion on bellows
Advantages
  • Shaft protection over the entire seal length
  • Protection of the seal face during installation due to special bellows design
  • Insensitive to shaft deflections due to large axial movement ability
  • Universal application opportunities
  • Important material certifications available
  • High flexibility due to wide offer on materials
  • Suitable for low-end sterile applications
  • Special design for hot water pumps (RMG12) available
  • Dimension adaptions and additional seats available
Recommended applications
  • Process industry
  • Chemical industry
  • Pulp and paper industry
  • Water and waste water technology
  • Food and beverage industry
  • Sugar industry
  • Water, waste water, slurries (up to 5 % by weight)
  • Pulp (up to 4 % otro)
  • Latex
  • Dairies, beverages
  • Sulfide slurries
  • Chemicals
  • Oils
  • Chemical standard pumps
  • Helical screw pumps
  • Stock pumps
  • Circulating pumps
  • Submersible pumps
  • Water and waster water pumps
  • Oil applications

Item Part no. to
DIN 24250
Description
1.1 472 Seal face
1.2 481 Bellows
1.3 484.2 L-ring (spring collar)
1.4 484.1 L-ring (spring collar)
1.5 477 Spring
2 475 Seat
3 412 O-Ring or cup rubber
Operating range
Shaft diameter: d1 = 10 … 100 mm (0.39" ... 3.94")
Pressure: p1* = 16 bar (230 PSI),
vacuum ... 0.5 bar (7.25 PSI), up to 1 bar (14.5 PSI) with seat locking
Temperature: t = -20 °C … +140 °C (-4 °F … +284 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
Admissible axial movement: ±2.0 mm


Standards and approvals
  • FDA
  • WRAS
  • KTW
  • ACS
  • W270
  • NSF
  • EN 12756

Notes
The MG1 can also be used as a multiple seal in tandem or in a back-to-back arrangement. Installation proposals can be supplied on request.

Dimension adaptations for specific conditions, e.g. shaft in inches or special seat dimensions are available on request.


Materials
Seal face: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1), Tungsten carbide (U3)
Seat: Silicon carbide (Q1, Q2), Tungsten carbide (U3), Special cast CrMo steel (S), Aluminium oxide (V)
Elastomer: NBR (P), EPDM (E), FKM (V), HNBR (X4)
Metal parts: CrNiMo steel (G), Hastelloy® C-4 (M)