DMG1 Mechanical Seal

Advantages

• 100 % compatible with MG1
• 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 … 110 mm (0.59″ … 4.33″)

Pressure: p1 = 18 bar (261 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 (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

Recommended applications

• Fresh water supply
• Building services engineering
• Waste water technology
• Food technology
• Sugar production
• Pulp and paper industry
• Oil industry
• Petrochemical industry
• Chemical industry
• Water, waste water, slurries (solids 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 waste water pumps

 Notes

The eMG1 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.