What is graphite packing？

graphite packing is mainly made of graphite wire reinforced by various reinforcing fibers, metal wires (steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized wire, glass yarn) and other materials. It is suitable for dynamic sealing under high temperature and high pressure conditions. Except for a few strong oxidants, it can be used to seal hot water, superheated steam, heat transfer fluid, ammonia solution, hydrocarbons, cryogenic liquids and other media. It is mainly used for sealing valves, pumps, and reactors under high temperature, high pressure, and corrosion-resistant media. It is also a unique universal sealing packing.

Performance of graphite packing

High strength 

Graphite packing has high strength and can withstand high pressure and high temperature environments, suitable for sealing applications under various extreme conditions.

Good conductivity

Graphite packing has good conductivity, which can effectively avoid static electricity accumulation and improve the safety of equipment operation.

Strong corrosion resistance

 Graphite packing has good corrosion resistance to most chemicals and can effectively protect equipment from corrosion.

Low friction coefficient

Graphite packing has a low friction coefficient, which can reduce the friction resistance of the equipment during operation and extend the service life of the equipment

graphite packing is the continuation of the solid phase carbonization reaction. Almost all non-carbon elements in carbon fiber, mainly nitrogen, are overflowed, and graphite fiber with a carbon content close to 100% is obtained. The release of nitrogen is the result of further condensation reaction of small hexagonal carbon network planes, and solid phase graphitization condensation reaction is possible. About 6% to 7% of nitrogen is removed during the graphitization process, leaving many pore defects and pores in the overflow path, causing the porosity Vp to reach a peak during the graphitization process. It can be seen that at about 2200℃, nitrogen is almost completely removed, causing the porosity to reach a value; after 2200℃, the porosity Vp drops sharply and the density rises sharply. The condensation denitrification reaction of small aromatic rings is the main reaction in the graphite packing process, which brings significant changes to the elemental composition, porosity and density of the fiber.

Graphite packing is widely used in many industrial fields

Oil and gas industry

 used to seal oil, natural gas and other hydrocarbon compounds3.

Chemical industry

 suitable for sealing various chemicals, such as acids, alkalis, solvents, etc.3.

Pharmaceutical industry

 due to its excellent corrosion resistance and cleanliness, graphite packing is also used for sealing pharmaceutical equipment1.

Power plant

used to seal high temperature and high pressure steam and hot water

Graphite packing has become an indispensable sealing material in the industrial field due to its excellent physical and chemical properties. It can not only adapt to various harsh working environments, but also effectively extend the service life of equipment and improve the safety and reliability of the system. With the advancement of technology, the application prospects of graphite packing will be broader

So, do you find these graphite packing beneficial? 

WEITENGROUP offers a wide range of graphite packing to optimize operational reliability. To learn more, please visit https://www.weitengroup.com/ For any questions regarding graphite packing, please send an email to export@weitengroup.com or call us at ＋86 13370996824 .