Gland Packing
Graphite-coated High-carbon Packing
Heart-braided from high-carbon fiber impregnated with special lubricant and blocking agent, with a graphite and molybdenum-disulfide surface treatment. Both strong and flexible with stable structure, it overcomes the brittle, fragile drawback of traditional carbon fiber and effectively blocks gas and liquid penetration. Chemically stable, well lubricated, extremely low friction and highly conductive with shaft protection, suitable for high-temperature, high-pressure pump and valve sealing in steam, water, solvent, acid and alkali.
Inquire about Graphite-coated High-carbon Packing| Property | Unit | Specification |
|---|---|---|
| bulk density | g/cm³ | ≥ 1.2 |
| loss on heating(345±10) | ℃ | ≤ 6 |
| loss on heating(300±10) | ℃ | - |
| loss on heating(260±10) | ℃ | - |
| compression ratio | % | 20-45 |
| recovery rate | % | ≥ 30 |
| coefficient of friction | ≤ 0.15 | |
| abrasion loss | g | ≤ 0.1 |
| acid loss(5% sulfuracid) | % | ≤ 3 |
| alkali loss(25% NaOH) | % | ≤ 3 |
| alkali loss(5% NaOH) | % | - |
| Property | Parameter |
|---|---|
| maximum temperature | 565℃(steam environment) 310℃(oxidizing environment) |
| maximum linear velocity | 15m/s |
| PH range | 1-13 |
| pump pressure up to | 30kg/cm² |
| valve pressure up to | 250kg/cm² |
| Size(Packing cross-section) | 3.0 | 4.0 | 5.0 | 6.0 | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 | 18.0 | 20.0 | 22.0 | 25.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| limit deviation | ±0.2 | ±0.3 | ±0.5 | ±0.7 | ±1.0 |
