Pure Flexible Graphite
The Valvograph department is able to produce tailor made die-formed graphite rings from 5.0 to 2,000.0 mm for different applications.
The gaskets are codified V48, V48R if energised and V48 OXY if for oxygen service.
Graphite die-formed rings for industrial Valves
| Flexible Graphite Foil | Sigraflex Styles C, E, APX, Z and ZX |
| Dimensions | from 10 to 2300 mm |
| Bulk density | from 1,35 to 1,85 gr/cm3 |
| Dimensions and Tollerances (mm) | Out. D. | Inn. D. | Th. | Wall | Bulk Density |
|---|---|---|---|---|---|
| up to 250 mm | [-0,10 ÷ 0,00] | [-0,00 ÷ 0,20] | +/- 0,20 | [-0,15 ÷ 0,00] | +/- 5,00% |
| from 251 to 500 mm | [-0,25 ÷ 0,00] | [-0,00 ÷ 0,25] | +/- 0,20 | [-0,25 ÷ 0,00] | +/- 5,00% |
| from 501 to 750 mm | [-0,50 ÷ 0,00] | [-0,00 ÷ 0,50] | +/- 0,20 | [-0,30 ÷ 0,00] | +/- 5,00% |
| from 751 to 1000 mm | [-0,60 ÷ 0,00] | [-0,00 ÷ 0,60] | +/- 0,20 | [-0,40 ÷ 0,00] | +/- 5,00% |
| from 1001 to 1250 mm | [-0,80 ÷ 0,00] | [-0,00 ÷ 0,80] | +/- 0,20 | [-0,45 ÷ 0,00] | +/- 7,00% |
| from 1251 to 2300 mm | [-0,90 ÷ 0,00] | [-0,00 ÷ 0,90] | +/- 0,20 | [-0,50 ÷ 0,00] | +/- 7,00% |