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Stuffing Box Packing
Whether you have a mild or extreme application, our various stuffing box packing compounds will match your well conditions.
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Description
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Specifications
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Resources
Description
We offer a broad range of sizes, materials, and designs to best fit your stuffing box configuration. Our Hercules packing is compatible with various models of stuffing boxes.
Dome Packing
- Rod sizes: 1⅛, 1¼, 15⁄16, 1⅜, 1½, or 1¾ in.
- Dramatically reduces stuffing box failures and maintenance costs
- Rubber packing with PTFE-blended seal ring
- PTFE-blended seal ring minimizes contact between rubber and polished rod
- Low coefficient of friction
- Less heat buildup
- Lower drag on polished rod
- Unique bowl shape converts vertical compression forces into radial forces for a tight seal around polished rod
- Automatically compensates for changes in flowline pressure
- One-time conversion kit to retrofit most cone-packed stuffing boxes
- Designed for easy replacement using packing pullers (available from National Oilwell Varco—P/N 99756K14)
- S. patent number: 5622371
Sure-Pak™ Packing
- Pressure-handling capabilities to 2,500 psi
- Rubber packing with unique PTFE seal ring
- Effectively dissipates heat
- Enhances fluid sealing control
- Longer packing service life
- Fewer packing gland adjustments required
- S. patent number: 5845909
Specifications
Packing Material Specifications
|
Material |
Max. % H2S |
Max. % CO2 |
Max. temperature |
|
NBR DOME |
2% |
Not recommended |
250 °F (121 °C) |
|
HSN DOME |
10% |
20% |
325 °F (163 °C) |
|
TFEP (Aflas) DOME |
35% |
15% |
450 °F (232 °C) |