Gland Packing
Steel Wire Outer-braided Flexible Graphite Braided Packing
This external steel-braided flexible graphite packing is braided from pure graphite yarn, with each graphite yarn reinforced by a stainless steel wire mesh and enhanced with a blocking agent. Chemically stable, soft, easily formed, well lubricated and highly conductive, it will not harden and is inert to chemicals; with no risk of extrusion or deformation at high temperature, it controls leakage consistently and suits high-temperature, high-pressure valve sealing. Suitable for pumps, turbines, general valves, high-temperature valves and all ordinary valve assemblies.
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| Property | Unit | Specification |
|---|---|---|
| bulk density | g/cm³ | 1.1-1.4 |
| compression ratio | % | 35-55 |
| recovery rate | % | ≥ 9 |
| carbon content | % | ≥ 85 |
| sulfur content | ppm | ≤ 1500 |
| chlorine content | ppm | ≤ 50 |
| thermal weight loss | % | ≤ 15 |
| coefficient of friction | ≤ 0.4 |
| Property | Parameter |
|---|---|
| maximum temperature | 560℃ |
| PH range | 0-14 |
| valve pressure up to | 200kg/cm² |
| Size(Packing cross-section) | ≤ 5 | 6~15 | 16~25 | ≥ 26 |
|---|---|---|---|---|
| limit deviation | ±0.4 | ±0.8 | ±1.2 | ±1.6 |
