Graphite Packing GR48

Composition

High carbon content flexible graphite yarns.

Characteristics

GR48 is a high-quality expanded mineral graphite packing made of high carbon content expanded graphite yarns. Its ability to withstand extreme temperatures and high pressures, combined with low thermal conductivity, make it an ideal choice for many industrial applications, where ease of cutting and installation is combined with extraordinary versatility. Thanks to its high-quality construction and great reliability, the expanded mineral graphite packing GR48 is a winning choice for those looking for a versatile and high-performance product for their industrial needs. Additionally, GR48 packing is also available in the reinforced version GR48R.

Applications

The flexible mineral graphite packing GR48 is an ideal solution for sealing industrial valves of all types, thanks to its extreme flexibility and versatility. Due to the high carbon content in the expanded graphite yarns, this packing is able to resist multiple industrial fluids and gases, with the exception of strong oxidizers. It can operate at a maximum pressure of 100 bar without the use of anti-extrusion rings. In the case of dynamic seals, however, it is recommended to use it with the help of anti-extrusion rings to ensure even better performance and extend its lifespan.

Graphite Packing GR48
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  P bar Ibf/in2 Vm/S f/pm pH T°C T°F
300 4500 1 200 0 ÷ 14 -200 ÷ 450 / 650 -330 ÷ 840 / 1200
100 1500 2 400
25 375 25 5000

  • Never use the product at its maximum rated temperature and pressure. Consult the manufacturer for further information.

  • 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.

  • Flexible graphite and carbon yarns shall not be used with oxidizing fluids.

  • The packing shall be used with wiper anti-extrusion rings in dynamic applications and in valves operating above 100 bar

sezione mm sezione inch kg/box lbs/box mt/box ft/box mt/kg ft/lbs
3 1/8" 1 2.2 100.0 328.1 100.0 149.0
4 - 1 2.2 47.4 155.5 47.4 70.6
5 3/16" 1 2.2 29.4 96.5 29.4 43.8
6 - 2.5 5.5 52.1 170.9 20.8 31.0
6.5 1/4" 2.5 5.5 50.0 164.0 20.0 29.8
8 5/16" 2.5 5.5 29.8 97.8 11.9 17.8
9.5 3/8" 2.5 5.5 21.3 69.9 8.5 12.7
10 - 2.5 5.5 19.2 63.0 7.7 11.4
11 7/16" 2.5 5.5 15.9 52.2 6.4 9.5
12 - 2.5 5.5 13.2 43.3 5.3 7.9
12.7 1/2" 2.5 5.5 11.9 39.0 4.8 7.1
14 9/16" 5 11 20.0 65.6 4.0 6.0
16 5/8" 5 11 14.7 48.2 2.9 4.4
17.5 - 5 11 13.3 43.6 2.7 4.0
18 11/16" 5 11 11.9 39.0 2.4 3.5
19 3/4" 5 11 10.6 34.8 2.1 3.2
22 7/8" 5 11 7.9 25.9 1.6 2.4
25.5 1" 5 11 6.2 20.3 1.2 1.8

  • The weight per meter and the packaging weight may have a tolerance of ±10%. Other sizes and packaging options are available on request.