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Carrara Packing and Gasket
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Packings for valves and pumps
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Composition Pure flexible graphite high Carbon content Impregnated with graphite and passive inhibitor of corrosion Classification ASTM F 2191: Type III, Class I, Grade A Features GR80SG is braided with pure flexible graphite strands, impregnated with a special compound rich of graphite and passive inhibitor of corrosion Applications Packing specific to seal all kind of industrial valves working with all fluids and gases, except the strong oxidizers. Avoid combustion gases and hot air over 450°C. The valve’s pressure has to be under 100 bar if the packing is not assisted by high pressure wiper rings. GR80SGS is suitable also for dynamic applications if assisted by harder wiper rings.
| P bar | Ibf/in2 | Vm/S | f/pm | pH | T°C | °F | |
 | 300(4) | 4500(4) | 1 | 200 | 0 ÷ 14(3) | -200 ÷ 450(1) 650(2) | -330 ÷ 840(1) / 1200(2) |
 | 20 | 300 | 2 | 400 | 0 ÷ 14(3) | -200 ÷ 450(1) 650(2) | -330 ÷ 840(1) / 1200(2) |
 | 40(4) | 600 | 25 | 5000 | 0 ÷ 14(3) | -200 ÷ 450(1) 650(2) | -330 ÷ 840(1) / 1200(2) |
| sezione mm | sezione inch | kg/box | lbs/box | mt/box | ft/box | mt/kg | ft/lbs |
| 3 | 1/8 | 1 | 2.2 | 85.5 | 280.4 | 85.5 | 127.3 |
| 4 | - | 1 | 2.2 | 48.1 | 157.7 | 48.1 | 71.6 |
| 5 | 3/16 | 1 | 2.2 | 30.8 | 100.9 | 30.8 | 45.8 |
| 6 | - | 2.5 | 5.5 | 53.4 | 175.3 | 21.4 | 31.8 |
| 6.5 | 1/4 | 2.5 | 5.5 | 45.5 | 149.3 | 18.2 | 27.1 |
| 8 | 5/16 | 2.5 | 5.5 | 30 | 98.6 | 12 | 17.9 |
| 9.5 | 3/8 | 2.5 | 5.5 | 21.3 | 69.9 | 8.5 | 12.7 |
| 10 | - | 2.5 | 5.5 | 19.2 | 63.1 | 7.7 | 11.5 |
| 11 | 7/16 | 2.5 | 5.5 | 15.9 | 52.1 | 6.4 | 9.5 |
| 12 | - | 2.5 | 5.5 | 13.4 | 43.8 | 5.3 | 8 |
| 12.7 | 1/2 | 2.5 | 5.5 | 11.9 | 39.1 | 4.8 | 7.1 |
| 14 | 9/16 | 5 | 11 | 19.6 | 64.4 | 3.9 | 5.8 |
| 16 | 5/8 | 5 | 11 | 15 | 49.3 | 3 | 4.5 |
| 17.5 | 11/16 | 5 | 11 | 12.6 | 41.2 | 2.5 | 3.7 |
| 18 | - | 5 | 11 | 11.9 | 38.9 | 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 | 1.6 | 2.4 |
| 25.5 | 1 | 5 | 11 | 5.9 | 19.4 | 1.2 | 1.8 |