Composition
| Typical properties of the Valvograph rings | Units | Value |
| Density | g/cm3 | 1.40÷1.70 |
| Ash content | % | ≤ 0.15 |
| Carbon content | % | ≥ 99.85 |
| Chloride content | ppm | ≤ 10 |
| Fluoride content | ppm | ≤ 10 |
| Halogen content | ppm | ≤ 40 |
| Sulfur content | ppm | < 10...< 300 * |
| Oxidation rate at 670°C | % | < 4 |
| Oxidation inhibitor | - | Y |
| Passive corrosione inhibitor | - | Y |
| Metal reinforcement (others available on demand) | - | SS316L |
* Sulphur < 300 ppm as standard, < 200 ppm for the nuclear industry (low sulphur nuclear grade), < 10 ppm on request
Characteristics
The Valvograph V48ZR graphite sealing ring gaskets for valves are designed to ensure reliable sealing in industrial valves. Thanks to their variable specific density, they offer an optimal combination of compressibility and strength, adapting to the different pressure requirements of industrial applications. Their construction with pure energized expanded graphite provides enhanced resilience and reliability.
Applications
These graphite rings are ideal for sealing industrial valves in graphite-compatible services. They are suitable for a wide range of industrial applications that require reliable performance and optimal sealing.
