Product Core

High-purity graphite sheet is made from natural flake graphite with a carbon content of ≥ 99%, through high-temperature purification and rolling forming processes. Relying on the layered crystal structure of graphite, it combines excellent chemical inertness, dense sealing, and stable thermal conductivity, making it a key foundational material for industrial sealing, anti-corrosion, and thermal conductivity scenarios.

Product Features

1.Ultra high purity performance: Carbon content ≥ 99%, extremely low impurity content, ensuring chemical stability, no chemical reaction in strong acids, strong bases, and organic solvents, no swelling or deterioration phenomenon.

2.Wide range temperature resistance: High-purity graphite sheet can work stably for a long time at -200~300 ℃, and can withstand high temperatures of 350 ℃ in the short term. Its physical properties do not significantly deteriorate under alternating high and low temperature environments.

3.Precision sealing characteristics: With a fine texture and slight elasticity, it can tightly adhere to the sealing surface under pressure, achieving a leakage rate of ≤ 0.01MPa, and adapting to the static sealing requirements of various flanges and valves.

4.Efficient thermal and electrical conductivity: The room temperature thermal conductivity reaches 150-200W/(m · K), with excellent electrical conductivity, and can simultaneously achieve sealing and heat/current conduction functions.

5.Easy to process customization: It has good flexibility and cutting ability, and can be processed into gaskets, liners, shaped parts, etc. according to needs. It can be stably produced within the conventional thickness range of 0.1-5mm.

6.Mechanical Properties: High strength, excellent thermal shock resistance, and easy for precision machining.

Product Usage

1.Chemical anti-corrosion sealing: Used as a static sealing gasket for chemical reaction vessels, pipeline flanges, and storage tanks to resist corrosion from acidic and alkaline media and ensure leak-free operation.

2.New energy equipment: As a fuel cell bipolar plate and lithium battery thermal pad, high-purity graphite sheet combines conductivity, thermal conductivity, and anti-corrosion performance to improve energy conversion efficiency.

3.Metallurgy and Machinery: Suitable for sealing temperature measuring elements in metallurgical furnaces, lubricating liners for precision machine tools, withstanding high temperatures and mechanical friction, and extending equipment life.

4.Laboratory and Environmental Protection: Manufacturing laboratory anti-corrosion vessel liners and sealing components for exhaust gas treatment equipment to meet stability requirements in harsh environments.

Technical Parameters

Parameter Category	Specific Details
Carbon Content	≥99%
Temperature Resistance Range	Long-term -200~300℃, short-term ultimate temperature resistance 350℃
Density	1.8-2.1g/cm³
Thermal Conductivity (Room Temperature)	150-200W/(m·K)
Leakage Rate	≤0.01MPa (under static sealing conditions)
Corrosion Resistance	Soaked in 20% sulfuric acid/sodium hydroxide solution for 30 days, mass change rate ≤0.5%
Conventional Thickness	0.1-5mm, customizable with 0.05mm ultra-thin specifications or multi-layer composite structures
Maximum Size	Maximum single sheet size 1000×2000mm, supporting splicing processing