Customization: | Available |
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Structure: | Single End |
Pressure: | High Pressure Mechanical Seals |
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Parameter | Value/Description | Unit/Note |
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Model | QT-3231 Lower Seal | Specifically designed for lower shaft sealing in multi-stage pumps |
Seal Type | Single Mechanical Seal with Integral Flush Port | Spring-energized, downward-facing installation |
Face Materials | - Primary: Silicon Carbide (SiC) - Secondary: Graphite Impregnated with PEEK |
Hardness: SiC ≥1300 HV, PEEK ≥280 HV |
Housing Material | Stainless Steel 316L | Corrosion-resistant for water, oil, and weak acids |
Pressure Range | 0 - 1.2 | MPa |
Shaft Diameter | 35 mm - 65 mm | Standard for medium to large pump shafts |
Maximum Rotational Speed | 3600 | RPM |
Leakage Rate | ≤2.5 | ml/h |
Media Compatibility | Clean Water, Lubricating Oils, Aqueous Solutions | Not suitable for abrasive or high-viscosity fluids |
Installation Type | Cartridge-Mounted (Bottom Entry Design) | Pre-aligned for quick replacement in vertical pumps |
Elastomer Material | EPDM | Temperature range: -40°C ~ 150°C |
Cooling/Flushing | Requires External Flush (API 682 Plan 11) | Flush port connects to pump discharge for heat dissipation |
Standards Compliance | ISO 3069, ASME B73.1 | Meets industrial pump sealing standards |