Gland Packing
Flexible Graphite Braided Packing
Flexible graphite braided packing is braided from graphite yarn, offering chemical stability, good lubrication, an extremely low friction coefficient and high thermal conductivity with shaft protection. Widely used for pump and valve sealing across all industries. Suitable for all media except fuming sulfuric acid, fuming nitric acid and aqua regia. (General technical data per JB/T 7370 — 2014.)
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| Property | Unit | Specification |
|---|---|---|
| bulk density | g/cm³ | specifications≤ 20 h,≥ 0.9 specifications＞ 20 h,≥ 0.7 |
| compression ratio | % | 25~50 |
| recovery rate | % | ≥ 12 |
| carbon content | % | ≥ 80 |
| sulfur content | ppm | ≤ 1500 |
| chlorine content | ppm | ≤ 50 |
| thermal weight loss | % | ≤ 17 |
| coefficient of friction | ≤ 0.18 |
| Property | Parameter |
|---|---|
| maximum temperature | 450℃ |
| maximum linear velocity | 20m/s |
| PH range | 0-14 |
| pump pressure up to | 30kg/cm² |
| 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 |
