API 622 Packing GR8622

Composition

Pure expanded mineral graphite 

Reinforcement in nickel-alloy and impregnation with special graphite-based compounds.

Characteristics

The graphite seal ring gasket for valves GR8622 is characterized by the use of pure expanded mineral graphite, which ensures high sealing performance. Thanks to its Low Emission API std 622 3rd Edition certification, this packing is particularly suitable for applications where low gas emissions into the environment are required. The GR8622 is able to maintain its elastic properties and sealing performance over time, without the need for re-tightening. The yarn used offers very low weight loss during high-temperature operation and a low coefficient of friction, making it suitable for applications that require high slipperiness. In addition, the GR8622 gasket is able to withstand high pressures and extreme temperatures, ensuring reliable and long-lasting sealing.

Applications

GR8622 is a specially designed packing for industrial valves used in low emissions service, also suitable for those with H.P./H.T. service. Made of pure expanded mineral graphite, this graphite packing ring for valve sealing is certified Low Emission API std 622 3rd Edition and maintains its elastic properties and sealing performance over time without the need for re-tightening. Additionally, the yarn provides a very low weight loss at high temperatures and offers a low coefficient of friction, ensuring high performance and reliability in industrial use.

API 622 Packing GR8622
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  P bar Ibf/in2 Vm/S f/pm pH T°C T°F
500 7250 2 400 0 ÷ 14 -200 ÷ 450 / 650 -240 ÷ 850 / 1200

  • 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

sezione mm sezione inch kg/box lbs/box mt/box ft/box mt/kg ft/lbs
3 1/8 1 2.2 74.1 243 74.1 110.3
4 - 1 2.2 41.7 137 41.7 62.1
5 3/16 1 2.2 26.7 87 26.7 39.7
6 - 2.5 5.5 46.3 152 18.5 27.6
6.5 1/4 2.5 5.5 39.4 129 15.8 23.5
8 5/16 2.5 5.5 26 85 10.4 15.5
9.5 3/8 2.5 5.5 18.5 61 7.4 11
10 - 2.5 5.5 16.7 55 6.7 9.9
11 7/16 2.5 5.5 13.8 45 5.5 8.2
12 - 2.5 5.5 11.6 38 4.6 6.9
12.7 1/2 2.5 5.5 10.3 34 4.1 6.2
14 9/16 5 11 17 56 3.4 5.1
16 5/8 5 11 13 43 2.6 3.9
17.5 11/16 5 11 10.9 36 2.2 3.2
18 - 5 11 10.3 34 2.1 3.1
19 3/4 5 11 9.2 30 1.8 2.8
22 7/8 5 11 6.9 23 1.4 2.1
25.5 1 5 11 5.1 17 1 1.5

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