Graphite Packing GR8888

Composition

Rayon graphite yarns high carbon content  C>99,50%

Impregnated with colloidal graphite

Passive inhibitor of corrosion

Characteristics

GR8888 is a special Rayon-based high carbon content graphite packing. The yarn is highly flexible, elastic and completely insensitive to thermal cycles, resisting to the thermal stresses without damage. In addition, all threads are impregnated with a special mixture of colloidal graphite enriched with a corrosion inhibitor to ensure maximum stem’s protection. GR8888 packing maintains its mechanical properties and its original shape even under conditions of high thermal stress, without undergoing any loss of weight or volume. Thanks to these characteristics, GR8888 proves to be an ideal choice for applications that require reliable and durable sealing performance over time.

Applications

The GR8888 packing has been designed to withstand the most challenging environmental conditions, making it a versatile and reliable solution for valves and pumps in multiple industrial applications. The GR8888 is suitable for all fluids, except strong oxidants, combustion gases, and hot air above 450°C. The packing withstands high temperatures without losing weight and volume, maintaining high elastic and mechanical properties, making it an ideal choice for demanding operating environments. In summary, the GR8888 packing represents an excellent solution for ensuring sealing and reliability in various industrial applications.

Graphite Packing GR8888
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  P bar Ibf/in2 Vm/S f/pm pH T°C T°F
200 3000 1 200 0 ÷ 14 -100 ÷ 450 / 650 -150 ÷ 840 / 1200
20 300 3 600
10 150 10 2000

  • Never use the product to the maximum temperature and pressure associated. Consult the manufacturer for further information

  • The peak temperature can be sustained for short exposures

  • With weakly oxidizing agents and hot air the temperature must be limited to 450 ° C

  • With steam and non-oxidizing fluids the temperature must be limited to 650 ° C

  • Graphite and carbon cannot be used with oxidizing fluids

size mm size inch kg/box lbs/box mt/box ft/box mt/kg ft/lbs
3 1/8 1 2.2 123.5 405 123.5 183.9
4 - 1 2.2 69.4 228 69.4 103.4
5 3/16 1 2.2 44.4 146 44.4 66.2
6 - 2.5 5.5 77.2 253 30.9 46
6.5 1/4 2.5 5.5 65.7 216 26.3 39.2
8 5/16 2.5 5.5 43.4 142 17.4 25.9
9.5 3/8 2.5 5.5 30.8 101 12.3 18.3
10 - 2.5 5.5 27.8 91 11.1 16.6
11 7/16 2.5 5.5 23 75 9.2 13.7
12 - 2.5 5.5 19.3 63 7.7 11.5
12.7 1/2 2.5 5.5 17.2 57 6.9 10.3
14 9/16 5 11 28.3 93 5.7 8.4
16 5/8 5 11 21.7 71 4.3 6.5
17.5 11/16 5 11 18.1 60 3.6 5.4
18 - 5 11 17.1 56 3.4 5.1
19 3/4 5 11 15.4 50 3.1 4.6
22 7/8 5 11 11.5 38 2.3 3.4
25.5 1 5 11 8.5 28 1.7 2.5

  • The weight per meter and the packaging's weight may have a tolerance of +/- 10%. Other sizes and packaging are available on demand.