Performance of Pure Flexible Graphite Packing filler for sealing
Pure Flexible Graphite Packing is a non-fibrous material. Pure Flexible Graphite Packing is made into plate and then molded into sealing filler for use. Pure Flexible Graphite Packing is also called expanded graphite, which removes impurities from natural flake graphite. After strong oxidation mixed acid treatment, it becomes graphite oxide. Graphite oxide decomposes carbon dioxide when heated, and its volume expands sharply, turning into flexible graphite with loose texture, softness and toughness. Its main features are:
1. Excellent heat resistance and cold resistance
Pure Flexible Graphite Packing has almost no change in physical properties from an ultra-low temperature of -270 degrees to a high temperature of 3650 degrees (in non-oxidized gas), and can also be used to about 600 degrees in air.
2. Excellent chemical corrosion resistance
In addition to corrosion in strong oxidizing media such as nitric acid and concentrated sulfuric acid, flexible graphite has almost no corrosion in other acids, bases and solvents.
3. Good self-lubrication
Pure Flexible Graphite Packing is the same as natural graphite. Under the action of external force, it is easy to slide between layers, so it has lubricity, good wear reduction and small friction coefficient.
4. High rebound rate
When the shaft or shaft sleeve is eccentric due to manufacturing, installation and so on, it has enough floating performance. Even if the graphite has cracks, it can be well closed, thus ensuring tight bonding, prevent leakage