Flexible graphite foil is an excellent sealing material for high temperature, high pressure transfer of liquids, gases, steam, chemicals, and corrosives. Available as graphite foil rolls, graphite sheets, graphite rings, and graphite discs.
Flexible graphite foil is manufactured from high purity, high crystalline natural graphite flakes, which are processed into continuous foil by a special acid and thermal treatment to produce expanded graphite crystals. The expanded graphite crystals are then formed into foil through an extensive calendaring process without any resins and binders.
Quality control begins with strict standards for selecting the flake graphite, which is critical to the final product's quality. Then continues with controlled acid and thermal treatment, all the way through final product testing. The extensive testing throughout the process ensures all key stages of the production are kept within specific tolerance limits. The result is high-quality graphite foil with high strength, high purity, and excellent compressibility. The whole process is ISO 9001 certified.
We offer a full line of graphite foil: homogeneous graphite foil rolls and flexible graphite sheets (width from 2" to 60"), as well as carbon graphite reinforced sheets with stainless steel or perforated stainless steel sheet inserted. Standard rolls are 39.4" x 100'. Nonstandard sizes and grades are also available on request.
Please contact us and request a quote for your product needs so we can demonstrate the potential cost savings to your bottom line.
We are committed to your complete satisfaction and we strive to provide you with the industry's best service. With HPMS Graphite, you can expect prompt responses, personal attention, and on-time delivery.
| Property | Unit | HPAA Grade | HPA Grade | HPB Grade |
|---|---|---|---|---|
| Carbon (minimum) | % | 99.5 | 99 | 99 |
| Ash (maximum) | % | 0.5 | 1.0 | 1.0 |
| Density | g/cc | 0.7 - 1.5 | 0.7 - 1.5 | 0.7 - 1.5 |
| Tensile Strength | MPa | 5.2 | 4.5 | 4.5 |
| Chloride | ppm | ≤35 | ≤40 | ≤45 |
| Sulfur | ppm | ≤500 | ≤700 | ≤1300 |
| Compressibility | % | >40 | >40 | >40 |
| Recovery | % | >15 | >15 | >15 |
| Compatible pH Range | pH | 0 - 14 | 0 - 14 | 0 - 14 |
| Application Temperature (In Air) | °C | -200 to 450 | -200 to 450 | -200 to 450 |
| Application Temperature (In Steam) | °C | -200 to 700 | -200 to 700 | -200 to 700 |
| Application Temperature (In Reducing Environment) | °C | -200 to 3000 | -200 to 3000 | -200 to 3000 |