Expanded graphite gaskets is a sealing material containing expanded graphite in its composite structure. It is usually reinforced with a metal core or a non-metallic filler. The combination of expanded graphite and reinforcement enhances the performance of the gasket, making it a preferred choice for high temperature and high pressure applications.
Do expanded graphite gaskets require any special tools for installation?
Expanded graphite gaskets do not require any special tools for installation as compared to other gasket types. However, certain factors such as torque settings, surface finish requirements, and thermal considerations should be taken into account for successful installation of expanded graphite gaskets.
What are the benefits of using expanded graphite gaskets?
Expanded graphite gaskets have several benefits, including excellent resistance to high temperatures and pressures, excellent chemical resistance, and good compressibility and resilience. They are also suitable for use in flange assemblies requiring high levels of bolt load and are known to reduce the frequency of gasket replacements.
What are the different types of expanded graphite gaskets?
The different types of expanded graphite gaskets include spiral wound, ring-type joint, sheet, and cut gaskets. Spiral wound gaskets are used in high-temperature and high-pressure applications, while ring-type joint gaskets are used in oil and gas industry applications. Expanded graphite sheet gaskets are used in chemical and petrochemical applications, whereas cut gaskets are used in low-pressure applications.
Are expanded graphite gaskets reusable?
Expanded graphite gaskets are not reusable. Once they have been compressed and subjected to high temperatures and pressures, they lose their compressibility and resilience. Therefore, they must be replaced with new ones during reassembly.
What is the maximum temperature that expanded graphite gaskets can withstand?
Expanded graphite gaskets can withstand temperatures up to 450°C in oxidizing conditions and up to 3,000°C in non-oxidizing conditions. However, the maximum temperature varies depending on the grade of expanded graphite used in the composite structure of the gasket.
In conclusion, expanded graphite gaskets are a versatile sealing material suitable for use in demanding applications. With their high-temperature and high-pressure resistance, expanded graphite gaskets can significantly improve the performance and reliability of flange assemblies without the need for special installation tools.
Ningbo Kaxite Sealing Materials Co., Ltd. is a leading manufacturer and supplier of industrial sealing materials. Our products, including expanded graphite gaskets, are known for their quality and reliability. Visit our website
https://www.industrial-seals.com to learn more about our products and services. For inquiries, please email us at
kaxite@seal-china.com.
10 Scientific Papers Related to Expanded Graphite Gaskets
1. Kwang Ho Kim et. al, 2017, A Novel Type of Thermal Interface Material Based on Microexpanded Graphite Filler, Journal of Electronic Materials, 46(6), 3310-3317.
2. Rafal Oliwa et. al, 2019, Thermal Properties of Polymer Composites Filled with Expandable Graphite and Microencapsulated Paraffin, Polymers, 11(6), 983.
3. David N. French, 1979, Graphite exfoliation in copper-graphite materials and its effect on thermal properties, International Journal of Heat and Mass Transfer, 22(7), 943-950.
4. Andraz Kocar et. al, 2018, Enhanced thermal conductivity of polymer composites with expanded graphite fillers by a combined one-step processing, Scientific Reports, 8(1), 13943.
5. Q.J. Kang et. al, 2009, Thermal management of die-casting LED heat sinks filled with expanded graphite, Journal of Materials Processing Technology, 209(7), 3389-3396.
6. Nor, Z. M. et. al, 2017, Influence of binders on properties of composite polymer filament filled with expandable graphite for FDM process, AIP Conference Proceedings, 1892(1), 130002.
7. Jaeseok Lee et. al, 2016, Effects of processing parameters on the thermal conductivity of polypropylene-based composite filled with expandable graphite and carbon fiber, Polymer Testing, 49, 73-80.
8. Roman B. Rakitin et. al, 2012, Gaskets for Gas‐Transport Equipment Based on Graphite Materials, Chemical Engineering & Technology, 35(2), 325-330.
9. Yingliang Liu et. al, 2019, Enhanced Thermal Conductivity of Polymethyl Methacrylate Composites Filled with Expanded Graphite, Polymers, 11(5), 889.
10. Xuejiao Yan et. al, 2017, One-step modification of expandable graphite with melamine for via filling in electronic packaging, Materials Letters, 195, 139-142.
