891 Rotary Inside Single Seal
- Rotary Pusher Single Seal
Designed for the replacement of low technology component seals, the 891 seal design provides an upgrade to standard original equipment component seal installations.
The 891 is designed not to damage or fret the equipment shaft/sleeve because the dynamic O-Ring is positioned on a replaceable component surface. This balanced, high-pressure monolithic seal design will provide a reliable upgrade to standard, unbalanced designs. The seal can be easily rebuilt in the field using low-cost rebuild kits.
Product Features
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- Monolithic seal faces
- Balanced design
- High-pressure capable
- Non-clog, isolated springs
- Field repairable
Technical Data
| Size Range | 16 mm to 200 mm (.750 inch to 8.000 inch) |
|---|---|
| Applicable Standards and Approvals | ISO-3069-S, ASME B73.1, ASME B73.2, NSF61 |
Materials
| Faces | CB, RSC, TC, SSC |
|---|---|
| Elastomers | FKM, EPDM, FEPM, FFKM |
| Metals | EN 1.4401 (316SS), Other Metallurgies available on request |
| Springs | EN 2.4819 (Alloy C-276) |
Operating Conditions
| Temperature | -55 to 300 °C (-67 to 570 °F) |
|---|---|
| Speed | 20 m/s ( 4000 fpm ) |
| Pressure |
40 bar g (60 psig) |
| 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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