eMG12

Item Description
1.1 Seal face
1.2 Bellows
1.3 Set of springs
1.4 PEEK-PTFE disk
2 Seat (G6)
3 O-Ring or cup rubber

eMG12

Features

  • For plain shafts
  • Single and dual seal
  • Elastomer bellows rotating
  • Unbalanced
  • Independent of direction of rotation

Advantages

  • 100 % compatible with MG12

  • Small outer diameter of bellows support (dbmin) enables direct retaining ring support, or smaller spacer rings
  • Optimal alignment characteristic through self-cleaning of disk/shaft
  • Improved centering across entire pressure operating range
  • No torsion on bellows
  • 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
  • Suitable for low-end sterile applications
  • Dimension adaptions and additional seats available

Operating range

Shaft diameter:
d1 = 15 … 100 mm (0.59" ... 3.94")
Pressure: p1 = 18 bar (261 PSI),
vacuum up to 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 (eSiC-Q7, Q1)
Seat: Silicon carbide (eSic-Q7, Q1), 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

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

Notes

The eMG12 can also be used as a multiple seal in tandem or in a back-to-back arrangement, please inquire. Dimension adaptations for specific conditions, e.g. shaft in inches or special seat dimensions are available upon request.



Product variants

eMG
Dimensions, items and designations same as for eMG12, but with a shortened bellows tail to achieve the fitting length I. Shortest fitting length.
eMG1
Dimensions, items and designations same as for eMG12, but with a shortened bellows tail to achieve the fitting length I3.
eMG13
Dimensions, items and designations same as for eMG12, 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).
eRMG12
Identical to eMG12, but with a special bellows surface on the shaft side. For use in hot water pumps.

d1 = 12 … 38 mm (0.47" ... 1.50")
Seat G6: Silicon carbide (eSiC-Q7)

A/eSIC-Q7:
120 °C (248 °F) and 25 bar (363 PSI)
140 °C (284 °F) and 16 bar (232 PSI)

B/eSIC-Q7:
120 °C (248 °F) and 18 bar (161 PSI)

eSIC-Q7/eSIC-Q7:
120 °C (248 °F) and 18 bar (161 PSI)