
Multiple Fully Customized Nonstandard Mechanical Seals for WILO (replacing original products). Single end, unbalanced, independent direction of rotation. 4 components fully customized for WILO pumps. Inner diameter: 10-200 mm. Pressure: ≤1.2 MPa, Temperature: -20~150°C, Linear Speed: ≤10 m/s.
Rotary Face / Stationary Face / Elastomer / Spring / Metal Parts
Tungsten Carbide/SiC (Rotary) / Tungsten Carbide/SiC (Stationary) / Viton/NBR/FFKM (Elastomers) / SS316/HC276 (Springs) / SS304/SS316L (Metal Parts)
| Model | Materials | GA |
|---|---|---|
| Seals for WILO | Tungsten Carbide/SiC (Rotary) / Tungsten Carbide/SiC (Stationary) / Viton/NBR/FFKM (Elastomers) / SS316/HC276 (Springs) / SS304/SS316L (Metal Parts) | — |
Pressure
1.2 MPa or less
Temperature
-20 ~ 150 ºC
Linear Speed
10 m/s or less
Mediums
Water and weak corrosion liquids.
Customization Available
Changes of materials for getting other operating parameters are possible. Contact us with your requirements.

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Astra Seals AS H76 Single Spring Mechanical Seal for Mixers and Boiler Feed Pumps. Single end, single spring, 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: ≤5 MPa, Temperature: ≤200°C, Linear Speed: ≤30 m/s. Standard: APIWidely used in boiler feed pumps for power plants, booster pumps and other medium pressure high speed applications.

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