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Composition G4 GORE yarns Features Packing made from single G4 GORE yarns. The filaments are pure ePTFE with encapsulated graphite powder. GF4770 does not contain any lubricant allowing great sealing and extrusion’s resistance. Applications Particularly suitable for reciprocating pumps and high pressure valves up to 500 bar. Suitable with all fluids and gases excluded the strong oxidizers.
| P bar | Ibf/in2 | Vm/S | f/pm | pH | T°C | °F | |
 | 500 | 7500 | 1 | 200 | 0 ÷ 14 | -200 ÷ 280 | -330 ÷ 540 |
 | 200 | 3000 | 2 | 400 | 0 ÷ 14 | -200 ÷ 280 | -330 ÷ 540 |
 | 80 | 1200 | 10 | 2000 | 0 ÷ 14 | -200 ÷ 280 | -330 ÷ 540 |
| sezione mm | sezione inch | kg/box | lbs/box | mt/box | ft/box | mt/kg | ft/lbs |
| 3 | 1/8 | 1 | 2.2 | 85.5 | 280 | 85.5 | 127.3 |
| 4 | - | 1 | 2.2 | 48.1 | 158 | 48.1 | 71.6 |
| 5 | 3/16 | 1 | 2.2 | 30.8 | 101 | 30.8 | 45.8 |
| 6 | - | 2.5 | 5.5 | 53.4 | 175 | 21.4 | 31.8 |
| 6.5 | 1/4 | 2.5 | 5.5 | 45.5 | 149 | 18.2 | 27.1 |
| 8 | 5/16 | 2.5 | 5.5 | 30 | 99 | 12 | 17.9 |
| 9.5 | 3/8 | 2.5 | 5.5 | 21.3 | 70 | 8.5 | 12.7 |
| 10 | - | 2.5 | 5.5 | 19.2 | 63 | 7.7 | 11.5 |
| 11 | 7/16 | 2.5 | 5.5 | 15.9 | 52 | 6.4 | 9.5 |
| 12 | - | 2.5 | 5.5 | 13.4 | 44 | 5.3 | 8 |
| 12.7 | 1/2 | 2.5 | 5.5 | 11.9 | 39 | 4.8 | 7.1 |
| 14 | 9/16 | 5 | 11 | 19.6 | 64 | 3.9 | 5.8 |
| 16 | 5/8 | 5 | 11 | 15 | 49 | 3 | 4.5 |
| 17.5 | 11/16 | 5 | 11 | 12.6 | 41 | 2.5 | 3.7 |
| 18 | - | 5 | 11 | 11.9 | 39 | 2.4 | 3.5 |
| 19 | 3/4 | 5 | 11 | 10.7 | 35 | 2.1 | 3.2 |
| 22 | 7/8 | 5 | 11 | 7.9 | 26 | 1.6 | 2.4 |
| 25.5 | 1 | 5 | 11 | 5.9 | 19 | 1.2 | 1.8 |