- For plain shafts
- Single seal
- Unbalanced
- Super-Sinus-spring or multiple springs rotating
- Independent of direction of rotation
- Variant with PTFE secondary seals for high chemical resistance (M78N)
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- Universal application opportunities
- Efficient stock keeping due to easily interchangeable faces
- Extended selection of materials
- Insensitive to low solids contents
- Flexibility in torque transmissions
- Self cleaning effect
- Short installation length possible (G16)
- Pumping screw for media with higher viscosity (M7..F)
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- Process industry
- Water and waste water technology
- Chemical industry
- Food and beverage industry
- Lube oils
- Low solids content media
- Water / sewage water pumps
- Chemical standard pumps
- Vertical screw pumps
- Gear wheel feed pumps
- Multistage pumps (drive side)
- Circulation of printing colors with viscosity 500 … 15,000 mm2/s.
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Shaft diameter: d1 = 14 … 100 mm (0.55 ” … 3.94 “)
Pressure: p1 = 25 bar (363 PSI)
Temperature: t = -50 °C … +220 °C (-58 °F … +428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement:
d1 = up to 25 mm: ± 1.0 mm
d1 = 28 up to 63 mm: ± 1.5 mm
d1 = from 65 mm: ± 2.0 mm
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Seal face: Special cast CrMo steel (S), Silicon carbide (Q1, Q2), Aluminium oxide (V)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
Seat G4: Silicon carbide (Q1*, Q2*)
Seat G6: Silicon carbide (Q1*, Q2*)
Seat G13: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B)
Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: CrNiMo steel (G) Metal parts: CrNiMo steel (G), Duplex (G1)
* Cannot be combined with seal face made of S
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Standards and approvals
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