It is very much easy to confuse graphite packing with carbon fiber packing. Even by packing manufacturers the terms carbon fiber and graphite fiber are often used interchangeably.

Both the products are used to manufacture braided packing’s, and they both have relatively good chemical and temperature resistant properties. But you will find differences too, and each has its advantages and disadvantages.

Typically, carbon fibers are considerably less expensive to manufacture and have excellent strength and toughness. They are more resistant to abrasive media, as carbon fiber-based packings are generally tougher than graphite. They have the great ability to handle the higher compressive loads that are necessary for high-pressure services.

Graphite packing fibers can approach the strength of carbon, but have improved lubricity and are not so abrasive. Graphite can operate at higher shaft speeds with less leakage when formed into packing that is used to seal rotating shafts. Compared to carbon fibers Graphite fiber packing from graphite packing manufacturer also have better thermal conductivity, meaning they can better dissipate any frictional heat that is generated. For clean media, high shaft speed services, such as boiler feed pumps these properties make them ideally suitable.

Both carbon and graphite fibers are composed of elemental carbon, but with distinct characteristic differences. By the raw materials from which the fibers are made these property differences are primarily created, and the type and extent of thermal processing.

The one major distinction is that graphite fiber typically has carbon content greater than 95 percent. While carbon is far less crystalline, so is often called amorphous whereas graphite fibers more closely approach the purity and properties of crystalline graphite packing china. Both lumps of coal and a fine diamond are made from carbon atoms, but the difference lies in their elemental structure.

After carbonization, to enhance crystallinity, carbon content, and purity graphite fibers are heated again too much higher temperatures. These fibers are then subjected to various treatments such as "sizing" or coating that to in yarn form.

Unimax Seals Company Limited
Ningbo Unimax International Limited

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