What Is Graphite Felt?
Graphite felt is a carbon-based felt material used for high-temperature insulation and electrochemical applications.
Basic Definition
Graphite felt is a porous carbon material made into felt form. In industrial use it is commonly discussed as soft graphite felt or rigid graphite felt. Soft felt is flexible for lining and wrapping, while rigid felt is self-supporting for panels and formed insulation. The correct form depends on installation geometry and handling requirements.
Common Applications
Typical application areas include vacuum furnace insulation, heat treatment furnace insulation and flow battery electrodes. Furnace selection depends on temperature, atmosphere, purity and required shape. Electrochemical selection focuses on electrode dimensions and the properties relevant to the stack design.
How to Compare Grades
Buyers usually compare thickness, density, ash content, thermal conductivity and treatment temperature. Grade names alone are not enough; the same product family may include standard and high-purity options. RuiGong product pages provide available values as HTML tables so purchasing and engineering teams can review the same information.
Practical Buying Checklist
- Decide whether flexible or self-supporting material is required.
- Confirm application, atmosphere and operating conditions.
- Compare thickness, density, ash and thermal properties where relevant.
- Send dimensions, quantity and delivery country for quotation.
What to Discuss With a Supplier
Explain the function of the felt, the installation shape and the process environment. If you are replacing an existing material, provide its model, dimensions or a drawing rather than relying only on a general product name.
Verify Before a Volume Order
For a first purchase, confirm the exact grade and dimensions in writing and evaluate a sample when practical. Check fit, handling and performance in your own equipment before approving a larger order.
