250
- High Reliability for General Applications
Chesterton 250 Double Seal is a value leader in its class. It is the ideal choice to reduce high maintenance costs and prevent wasteful leakage, shaft fretting damage, and inefficient downtime. Designed for baseline applications and for upgrading packed or component sealed equipment, the 250 seal makes general industrial sealing simple, reliable, and affordable.
Product Features
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• Provides sealing security that conventional single seals cannot match
• Reliable cartridge design that increases seal life
Technical Data
| Size Range | 25 mm to 120 mm (1 inch to 4.75 inch ) |
|---|---|
| Standards and Approvals | ISO-3069-S, ASME B73.1, ASME B73.2, NSF61 |
Materials
| Springs | EN 2.4819 (Alloy C-276) |
|---|---|
| Elastomers | FKM, EPDM, FEPM |
| Faces | CB, SSC |
| Metals | EN 1.4401 |
Operating Conditions
| Pressure Limit Vacuum | 711 mm Hg Vacuum ( 28 in Hg vacuum ) |
|---|---|
| Pressure Limit Rotating | 300 PSIg ( 20 BARg ) |
| Speed Max | 20 m/s ( 4000 fpm ) |
| Temperature Max | 570 °F ( 300 °C ) |
| Temperature Min | -67 °F ( -55 °C ) |
| Notes |
Seal pressure capabilities are dependent on the fluid sealed, temperature, speed, and seal face combinations. For operation outside the limits and additional materials consult Chesterton Mechanical Seal Engineering. |
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