AS H75
Astra Seals AS H75 Series Cartridge Mechanical Seal for Boiler Feed Pumps. Single end, multiple springs, balanced, independent rotary direction, coil driven. Simple and reliable transmission, easy to install with stable sealing performance and long life. Inner diameter: 50 mm to 200 mm. Pressure: ≤2.5 MPa, Temperature: ≤200°C, Linear Speed: ≤30 m/s. Standard: API682. Widely used in boiler feed pumps for power plants, booster pumps and other medium pressure high speed applications.
Materials
Rotary Face / Stationary Face / Elastomer / Spring / Metal Parts
Antimony Filled Carbon/TC (Rotary) / SiC/TC (Stationary) / Viton/EPDM/FFKM/Aflas (Elastomers) / SS304/SS316L/HC-276 (Springs) / 410S/SS304/SS316/SS316L (Metal Parts)
1 Variant
| Model | Materials | GA |
|---|---|---|
| H75 | Antimony Filled Carbon/TC (Rotary) / SiC/TC (Stationary) / Viton/EPDM/FFKM/Aflas (Elastomers) / SS304/SS316L/HC-276 (Springs) / 410S/SS304/SS316/SS316L (Metal Parts) | — |
Operating Conditions & Materials
Pressure
2.5 MPa or less
Temperature
200 ºC or less
Linear Speed
30 m/s or less
Mediums
Water, boiler water.
Customization Available
Changes of materials for getting other operating parameters are possible. Contact us with your requirements.
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Astra Seals AS H74 Multiple Spring Mechanical Seal. Single end, multi springs, unbalanced, independent direction of rotation, lug transmission. Easy to install with good compensation. Balanced loads on seal faces with stable and reliable sealing performance. Inner diameter: 20 mm to 300 mm. Pressure: ≤6 MPa, Temperature: 20~200°C, Linear Speed: ≤20 m/s. Standards: DIN24960, ISO3069, GBWidely used in chemical processing, oil refining, petrochemical engineering, sewage treatment, pharmacy and food production.
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