Benefits and properties
- Excellent tightness
- Best heat dissipation
- High temperature and oxidation resistance
- Excellent chemical resistance
- Reduced contamination of processes due to the high purity
- PFAS-free coatings available
Particularly powerful graphite yarns
We offer graphite yarns made of different base materials, depending on your requirements. For packings needing a soft, compliant yarn that is stable at high temperatures our Rayon yarn is the best choice. Our graphitized PAN yarns on the other hand stand out due to their excellent oxidation resistance. When specially coated, they also meet the latest Shell specification MESC SPE 85/204.
Our overknitted flexible graphite yarns are especially suitable for high temperatures, oxidation and corrosive environments. Details on these materials can be found under SIGRAFLEX Graphite Foil Yarns
Yarns for unmet needs
The new yarn products from SGL Carbon close the existing market gap in the field of packing yarns that are high in purity as well as resistant to high-temperatures.
Are you interested in trying out our yarn products? Please contact us.
Application-specific suitability of our SIGRAFLEX carbon and graphite textile yarns
We offer the best textile yarn for your individual application. We offer the best textile yarn for your individual application. Our special yarn grades for military and nuclear applications as well as all textile yarns with a pure graphite coating are free of PFAS. This applies to our SIGRAFLEX OXR yarn, too. Furthermore, SIGRAFLEX APX2 coating is contains also no PFAS.
| Pre-cursor material | |||||
|---|---|---|---|---|---|
| Application | PAN Carbon | PAN stretch broken Carbon | PAN Graphite | PAN stretch broken Graphite | Rayon Graphite |
| Military applications | ● | ||||
| Power plants | ● | ● | ● | ● | ● |
| Nuclear power plants | ● | ||||
| Refineries | ● | ● | |||
| Petrochemical installations | ● | ● | ● | ||
| Chemical plants | ● | ● | ● | ● | |
| Paper and cellulose industry | ● | ● | ● | ● | ● |
| High-speed pumps | ● | ● | |||
| Steam applications | ● | ● | ● | ● | |
| Valve packing | ● | ● | ● | ● | |
| Piston-pump packing | ● | ● | ● | ||
Product characteristics of our different SIGRAFLEX textile yarn materials
We offer the best textile yarn for your individual application.
| Pre-cursor material | ||||||
|---|---|---|---|---|---|---|
| Product characteristics | Unit | PAN Carbon | PAN stretch broken Carbon | PAN Graphite | PAN stretch broken Graphite | Rayon Graphite |
| Type | Carbon | Carbon | Graphite | Graphite | Graphite | |
| Carbon content 1) | % | ≥ 94 | ≥ 94 | ≥ 99 | ≥ 99 | ≥ 99.9 |
| Temperature 2) | °C | < 400 | < 400 | < 500 | < 500 | < 450 |
| °F | < 752 | < 752 | < 932 | < 932 | < 1076 | |
| pH range 3) | 2 - 12 | 2 - 12 | 1 - 14 | 1 - 14 | 1 - 14 | |
| Tensile strength | very high | high | very high | high | moderate | |
| Twisting | S, Z, ribbon | S, Z | S, Z | S, Z | S, Z | |
Brochures, technical data and information sheets as well as approvals and test reports on our SIGRAFLEX products can be found in our Download Center.
