The 20% carbon PTFE tube for high friction application is a high-performance fluoropolymer tube engineered for sliding wear, high-load bearing, and aggressive chemical environments where standard PTFE would deform or wear too quickly. The material combines virgin PTFE resin with a precisely dispersed 20% carbon fiber filler by weight. This filler increases compressive strength, reduces creep and cold flow, and improves thermal conductivity by roughly three to five times compared with unfilled PTFE. In practice, that means longer service life for bushings, wear rings, piston seals, valve seats, and dynamic seal applications. When evaluating a carbon filled PTFE tubing high load material, design engineers often cite the carbon-filled grade for its resistance to extrusion at elevated pressures and its ability to maintain tight clearances over thousands of operating cycles. As a high performance carbon PTFE tube supplier, we stock both extruded and compression-molded tubes with full material certification, dimensional reports, and batch traceability. The PTFE tube 20% carbon filled product can be supplied as straight lengths, precision-cut sleeves, or machined components with grooves, flanges, and chamfers to match specific OEM drawings. Standard sizes cover inner diameters from 3 mm to 100 mm and wall thicknesses from 1 mm to 12.7 mm, with custom dimensions available on request. Key material properties are summarized below.
20% Carbon Fiber PTFE Tube is manufactured under ISO 9001 quality control and inspected for inner diameter, outer diameter, wall thickness, ovality, and surface defects before packaging. The carbon fiber filler gives the tubing a dark gray to black appearance and a slightly textured surface that improves wear compatibility with soft metals, ceramics, and hard-coated shafts. Because the filler lowers electrical resistance, the tube dissipates static charges that can accumulate in dry powder conveying, fuel transfer, and solvent-handling systems. The table below provides typical property values measured according to ASTM or equivalent test methods. These values apply to extruded stock and may vary slightly with wall thickness or batch composition.
| Property | Typical Value |
|---|---|
| Filler content | 20% carbon fiber by weight |
| Color | Black / dark gray |
| Density | 2.05–2.15 g/cm³ |
| Tensile strength | 2,500–3,500 psi (17–24 MPa) |
| Elongation at break | 50–100% |
| Hardness | Shore D 60–65 |
| Compressive strength at 10% strain | 1,800–2,200 psi |
| Maximum continuous service temperature | 500°F (260°C) |
| Minimum service temperature | -250°F (-156°C) |
| Thermal conductivity | 0.45–0.65 W/(m·K) |
| Volume resistivity | 10³–10⁵ ohm·cm |
| Water absorption | < 0.03% |
| Standard inner diameter range | 0.118 in to 3.937 in (3 mm to 100 mm) |
| Standard wall thickness range | 0.040 in to 0.500 in (1 mm to 12.7 mm) |
| Standard length | 6 ft, 12 ft, or custom cut |
Typical applications include hydraulic cylinder wear rings, rotary shaft bushings, chemical pump thrust washers, valve stems, and food-processing guide rails that require a non-lubricated, wear-resistant surface. For high-volume production, the tubing can be supplied in long lengths for in-house machining, or we can provide finished components with CNC precision to reduce scrap and assembly time. The carbon-filled PTFE grade is generally not recommended for contact with strong oxidizing agents such as molten alkali metals or elemental fluorine at high temperatures, but it performs well in most industrial fluid and gas environments. All products are cleaned, deburred, and individually wrapped in protective film to prevent surface damage during transit.
