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Carbon and graphite products for machinery industry, specific products include: graphite sealing rings, sealing rings, graphite bearings, lubricating columns, graphite blades, mechanical sealing parts impregnated with various metals or resins.
Characteristics of raw materials of carbon and graphite products for machinery industry: high mechanical strength, corrosion resistance, good wear resistance and self-lubrication.
Graphite material has good resistance to a variety of corrosive media, can work for a long time in corrosive environments without damage, greatly extending the service life of the seal.
Graphite material has a unique self-lubricating properties, can be in the absence of lubricant or lubricant is insufficient, through its surface microstructure of the friction effect, to achieve self-lubrication. This characteristic makes graphite seals in the operation process can reduce friction resistance, reduce wear, improve sealing efficiency.
Graphite has a high thermal conductivity, second only to silver, copper and aluminum, and is the only non-metallic material with high thermal conductivity. Therefore, it can dissipate the friction heat in time, thus reducing the temperature of the sealing end face, which is very necessary to improve its reliability and service life.
Graphite has a low coefficient of linear expansion, which is about 1/2~1/4 of that of metal. when the temperature rises, its thermal deformation is small, which is favorable to keep the sealing end face parallel, and at the same time, it has good thermal stability, good heat resistance, cold resistance and thermal shock resistance.
Graphite seals have a certain compression resilience after processing and molding. When under pressure, the seal can be elastic deformation, fill the sealing gap, realize the tight seal. When the pressure is removed, the seals can quickly return to their original state, to maintain the stability of the sealing performance.
|
Model |
Impregnation Material |
Bulk Density g/cm³ |
Shore Hardness Hs |
Flexural Strength Mpa ≥ |
Compressive Strength Mpa ≥ |
Porosity % |
Coefficient of Thermal Expansion ×10/℃-6 |
Air Pressure Detection KG |
Water Pressure Mpa |
Maximum Temperature Resistance ℃ |
|
M126P |
Copper（P） |
2.4-2.6 |
75 |
80 |
250 |
3.0 |
6 |
6-7 |
2.4 |
500 |
|
M116D |
Dysprosium（D） |
2.2-2.5 |
75 |
70 |
240 |
2.0 |
5.5 |
6-7 |
2.4 |
400 |
|
M252A |
Aluminum（A） |
2.1 |
40 |
85 |
180 |
2,0 |
7.5 |
6-7 |
2.4 |
400 |
|
M254B |
Pasteurized Alloy（B） |
2.4 |
60 |
64 |
160 |
9 |
5.5 |
6-7 |
2.4 |
200 |
|
M116K |
Resin (K)
|
1.82-2.0 |
92 |
75 |
245 |
0.8 |
5.5 |
6-7 |
2.4 |
200 |
Mechanical graphite sealing material has a wide range of uses, mainly used in a variety of mechanical equipment that needs to be sealed, such as pumps, valves, reactors, and high-temperature ovens, high-temperature kilns and other high-temperature equipment. In these devices, graphite sealing material with its excellent performance, can effectively prevent media leakage, to ensure the normal operation of the equipment.
At the same time, graphite sealing materials are also widely used in the chemical industry, in the face of a variety of corrosive media, graphite sealing materials can provide reliable sealing effect!
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