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

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 entire seal length
  • Protection of 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

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 (±0,08")

Materials

Seal face: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1, eSiC-Q7)
Seat: Silicon carbide (Q1, eSic-Q7), Tungsten carbide (U3)
Elastomer: NBR (P), EPDM (E), FKM (V),
HNBR (X4)
Metal parts: CrNiMo steel (G), Hastelloy® (M)

Further materials upon request.

Standards and approvals

  • EN 12756 (MG12, MG13)

Various material approvals available (depending on type and material combinations).
Please inquire!
  • FDA
  • WRAS
  • KTW
  • ACS
  • W270
  • NSF

Notes

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

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



Product variants

MG12
Dimensions, items and designations same as for MG1, but with an extended bellows tail to achieve the fitting length I1k according to EN 12756 in combination with seat G6 or G60 (da exceeds EN 12756).
MG13
Dimensions, items and designations same as for MG1, but with an extended bellows tail to achieve the fitting length I1N according to EN 12756 in combination with seat G6 or G60 (da exceeds EN 12756).
MG1S20
Dimensions, items and designations same as for MG1, but with an extended bellows tail to achieve the special fitting length I1S in combination with seat G50.
RMG12
Identical to MG12, but with a special bellows surface on the shaft side. For use in hot water pumps up to 120 °C (248 °F) and 25 bar (363 PSI) or 140 °C (284 °F) and 16 bar (232 PSI). Only in combination with seat G606 (d1 = 12 … 38 mm (0.47" ... 1.50")).
Seal face: Tungsten carbide (U3)
Seat G606: Carbon graphite resin impregnated (B)