1. Product Core Overview
Graphite Sealing Roll Material is a roll-shaped sealing material made mainly from high-purity flexible expanded graphite. Its core value lies in utilizing the excellent heat resistance, chemical stability, and plasticity of graphite materials to provide users with a universal sealing solution that can be flexibly cut and adapted to various complex working conditions. It can effectively seal extreme temperature, high pressure, and highly corrosive media, and is a high-performance basic material in the field of industrial equipment sealing.
2. Main Features and Advantages
Excellent chemical corrosion resistance
Description: It exhibits excellent resistance to various highly corrosive media.
Advantages: It can be used for long-term stable sealing of strong acids (such as hydrochloric acid and sulfuric acid with a concentration of ≤ 30%), strong bases (such as sodium hydroxide solution with a concentration of ≤ 20%), and organic solvents (such as ethanol and acetone), with a long service life.
Extremely wide temperature resistance range
Description: Can withstand extreme low and high temperatures in a non-oxidizing atmosphere.
Advantages: It has a wide temperature range and can maintain sealing performance under harsh conditions from -200 °C to +850 °C (even up to 3000 °C in an inert atmosphere), perfectly responding to the thermal cycle impact of equipment.
Excellent flexibility and compensation ability
Description: The material is soft, easy to cut and wrap, and has good compression rebound rate.
Advantages: It can easily fill the micro unevenness of the flange joint surface, compensate for the gap changes caused by temperature fluctuations or vibrations, and achieve a tight fit and leak-free seal.
High purity and high stability
Description: Graphite Sealing Roll Material uses high-purity graphite raw materials, without binders and corrosive impurities.
Advantages: It will not introduce new pollution or corrosion risks to the sealing system, ensuring safe equipment operation, especially suitable for the chemical, pharmaceutical, and food industries that require high purity.
3. Main Purpose
Universal industrial seal: Widely used for flange sealing of various industrial equipment such as pipelines, valves, pump bodies, heat exchangers, etc.
Application under harsh working conditions: Especially suitable for sealing scenarios involving high temperature, high pressure, and highly corrosive media in industries such as petrochemicals, power, and metallurgy.
Customized sealing substrate: As a basic roll material, it can be punched and molded into various shapes of gaskets (such as wrapped gasket inner ring packing, packing, etc.) to meet the sealing needs of non-standard equipment.
Emergency maintenance: Due to its flexible and easy-to-cut characteristics, it is often used as a quick sealing material for on-site emergency maintenance.
4. Main Technical Parameters
|
Parameter Categories |
Typical Values |
|
Matrix material |
High-purity flexible expanded graphite (carbon content usually > 99%) |
|
Product form |
Roll-shaped; can provide rolls of different widths and lengths |
|
Common thickness |
0.15mm - 3.0mm (customizable according to requirements) |
|
Temperature range |
- Oxidizing atmosphere: -200 °C to +450 °C (continuous use)- Non-oxidizing atmosphere: up to +850 °C to 3000 °C |
|
Chemical resistance |
Resistant to most acids, alkalis, and organic solvents (except for strong oxidizing acids such as concentrated nitric acid and concentrated sulfuric acid) |
|
Compression ratio |
15% - 40% (depending on thickness and density) |
|
Rebound rate |
≥ 15% |
|
Compliance standards |
Can comply with relevant international standards (such as ASTM, DIN) and asbestos-free and chlorine-free requirements |
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