Products Description
The eMG1 is a single-face rotating elastomer bellows mechanical seal engineered as a direct drop-in replacement for traditional MG1 seals. Standard dimensional compliance enables straightforward retrofitting on most standard pump chambers without structural modification.
Adopting a torsion-free elastomer bellows instead of conventional spring-driven secondary sealing structures, the unit provides reliable axial floating compensation and isolates the pump shaft from process fluid. This prevents shaft abrasion and corrosion, making the eMG1 Elastomer Bellows Mechanical Seal highly adaptable to light and medium-duty centrifugal and circulation pumps in water, wastewater, food and general chemical environments.
The optimized bellows structure eliminates twisting during continuous operation, minimizing material fatigue and accommodating routine shaft run-out, vibration and minor axial displacement in rotating equipment.
Structural Features
Torsion-free Elastomer Bellows
Torque transmission is completed without bellows twisting, reducing long-term elastomer stress and ensuring consistent sealing stability over extended service cycles.
01
Axial Movement Compensation
Compensates for axial displacement within ±2.0 mm to offset installation deviation and operational shaft floating.
02
Shaft Protection
Full bellows coverage over the sealing zone isolates the shaft from process media and reduces component wear.
03
Anti-deposition Seal Face
Optimized face geometry resists scale and fine particle accumulation, delivering stable performance in low-solids media.
04
Bidirectional Rotation
Compatible with clockwise and counterclockwise rotation when paired with suitable material configurations.
05
Operating Parameters
| Parameter | Value |
| Shaft diameter | 14–110 mm |
| Operating pressure | Vacuum to 18 bar |
| Max pressure | 20 bar (with seat locking device) |
| Temperature range | -20 °C to +140 °C (material-dependent) |
| Max sliding velocity | 10 m/s |
| Allowable axial displacement | ±2.0 mm |
Material Options
| Seal Faces & Seats | A: Antimony-impregnated carbon graphite |
| B: Resin-impregnated carbon graphite | |
| Q1/eSiC-Q7: Hydrodynamic silicon carbide | |
| U3: Tungsten carbide for high-wear media | |
| Elastomers | NBR: Clean water and oil media (≤90 °C) |
| EPDM: Hot water and weak chemical media (≤140 °C) | |
| FKM: Solvents and mildly aggressive media | |
| HNBR: High aging and oil resistance for continuous industrial operation | |
| Metal Components | 316L stainless steel (standard) / Hastelloy alloy (high corrosion resistance) |
Application Scope
The eMG1 Elastomer Bellows Mechanical Seal is widely applied on general-purpose centrifugal pumps, circulation pumps, wastewater pumps, submersible pumps and pulp pumps.
Typical scenarios include water supply and HVAC systems, municipal wastewater treatment, food and beverage processing, light petroleum and general chemical processing, as well as pulp and paper production.
Products Description
Q: What pressure limits should we pay extra attention to for the eMG1?
A: It is a non-balanced mechanical seal and not intended for ultra-high pressure service. Any operating pressure above 18 bar needs a supporting seat locking structure plus full validation of all site working parameters before use.
Q: What limits the maximum operating temperature of this seal?
A: The temperature ceiling is governed by the selected elastomer grade. Always cross-check elastomer media resistance for continuous high-temperature service.
Q: Does bidirectional rotation affect seal service life?
A: No negative impact. The symmetrical friction face design ensures consistent wear rate in both rotation directions, with no shortened lifespan under normal working conditions.
Q: Can this seal run continuously 24/7?
A: Yes. The torsion-free bellows structure is optimized for continuous operation. Only frequent pressure surges, dry running and abrasive media will shorten continuous service cycles.
Q: What key information is irreplaceable for accurate quotation?
A: Pump actual running speed and real medium composition are critical. Many industry-standard media contain unknown additives that lead to material mismatch if not confirmed.
Q: Can non-standard custom combinations be manufactured?
A: Yes. We support non-standard material matching and minor structural customization for special corrosive, high-speed and variable-frequency working conditions to solve on-site sealing pain points.
Q: What key information is irreplaceable for accurate quotation?
A: Besides running speed and medium composition, we also need shaft diameter, operating temperature, working pressure, installation dimensions and preferred material grades to complete proper material matching and model selection. Full data helps us avoid recommending a seal that looks compatible on paper but fails under real site conditions.
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