Pure & Reinforced Composite Graphite Gland Packing Series
Engineered for extreme thermal and mechanical demands, our reinforced graphite packings integrate high-purity graphite and PTFE with cotton, glass fiber, or metal wire cores. They deliver superior dimensional recovery, exceptional heat dissipation, and reliable shaft sealing across heavy industrial systems.
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High-Speed Dynamic Sealing & Thermal Management
Pure & Reinforced Composite Graphite Gland Packing Series
Hebei Xinda is a specialized manufacturer of advanced ptfe graphite packing and multi-strand braided graphite packing systems engineered for rigorous rotating and reciprocating machinery. By combining high-purity expanded graphite, lubricating PTFE dispersions, and high-tensile reinforcing skeletons (including glass, cotton, copper, and Inconel wire), our graphite packing material provides exceptional thermal dissipation and chemical resistance across the full pH 0–14 spectrum. Whether you need a heavy-duty graphite gland for high-speed centrifugal pumps or high-pressure steam valves, our tailored composite series ensures long-term leak-free reliability.
Unlike surface-coated ropes, our integrated graphite-PTFE treatment impregnates every fiber yarn throughout the entire cross-section.
High carbon content rapidly conducts frictional heat away from shafts, preventing thermal lock-up at elevated peripheral speeds.
Precision lattice braiding ensures a tight graphite packing gland seal that maintains resilience during pressure surges.
Graphite Packing Material Technical Data Sheet
| Performance Project | Test Unit | Target Specification Value |
|---|---|---|
| Total Carbon Content | % | ≥ 90 |
| Ash Content (Max) | % | ≤ 2.0 |
| Sulfur Content (Max) | ppm | ≤ 1000 |
| Chlorine Content (Max) | ppm | ≤ 50 |
| Bulk Density | g/cm³ | 0.9 – 1.3 |
| Tensile Strength (Min) | MPa | ≥ 10.0 |
| Loss on Ignition | % | ≤ 12.0 (Tested at 450°C for 3 Hours) |
Reinforced Braided Graphite Packing Specifications
To match diverse equipment load limits and mechanical stress levels, we supply composite graphite gland packings across multiple structural reinforcement options:
| Series No. | Composite Reinforcement Structure & Composition |
|---|---|
| Type 01 | Cotton fiber reinforced graphite gland packing (General industrial pumps) |
| Type 02 | Glass fiber reinforced graphite gland packing (Enhanced thermal stability) |
| Type 03 – 04 | Cotton or Glass fiber + Stainless Steel wire reinforced graphite packing (High pressure) |
| Type 05 – 06 | Cotton or Glass fiber + Inconel wire reinforced graphite gland packing (Extreme temperature) |
| Type 07 – 08 | External Inconel wire braided & jacketed cotton-graphite composite packing |
| Type 09 – 10 | Cotton or Glass fiber + Copper wire reinforced graphite gland packing |
| Type 11 – 12 | Specialized Graphite PTFE gland packing & Carbonized fiber gland packing variants |
Typical Industrial Applications
High-temperature steam lines, turbine shaft sealing, and heat exchange system valves.
Refinery pumps, distillation columns, and chemical transfer lines handling aggressive organic fluids.
High-temperature gas ducts, rotary kilns, and mechanical shaft sealing assemblies.
High-speed rotating shafts and high-pressure valve stems requiring superior thermal dissipation.
Frequently Asked Questions
Pure white PTFE has relatively low thermal conductivity and can soften or burn under high-speed friction. By utilizing braided graphite packings, frictional heat is dissipated much faster, allowing equipment to run at higher peripheral speeds without damaging the seal.
Yes. Our PTFE graphite packing formulations are chemically inert and highly resistant to almost all corrosive media across the full pH 0–14 range, making them exceptionally reliable for chemical processing and pulp & paper industries.
