Products

For demanding high PV (pressure-velocity) applications, carbon fiber PTFE tube delivers exceptional performance where standard unfilled PTFE falls short. In these conditions, friction generates heat at the contact interface, and unfilled PTFE both dissipates heat poorly and tends to creep under load, leading to clearance loss and premature failure. Carbon fiber reinforcement solves both problems by raising thermal conductivity and resisting deformation. As a dedicated carbon fiber reinforced PTFE tube supplier, we manufacture tubing with uniformly dispersed carbon fibers to provide consistent mechanical properties along the entire length. The carbon filled PTFE tubing high load grade is engineered for bearing and wear ring applications where high radial loads cause unfilled PTFE to deform. In dynamic sealing systems, the PTFE carbon tube dynamic seal configuration resists extrusion and maintains dimensional stability under fluctuating pressure. For equipment operating in abrasive or poorly lubricated environments, the high wear resistance carbon PTFE tube option significantly extends service life. These tubes are commonly specified for hydraulic cylinders, shock absorbers, industrial pumps, food processing lines, and agricultural machinery where high PV values demand a balance of strength, wear resistance, and low friction.

The carbon fiber PTFE tube for high PV applications is precision machined or extruded to tight tolerances, ensuring reliable fit in seals, bushings, and custom assemblies. Standard production covers a broad range of dimensions, and custom orders can be produced with short lead times. The carbon fiber content is carefully controlled to balance hardness and flexibility, allowing the tube to maintain a low coefficient of friction while resisting deformation. Internal and external surfaces can be ground to achieve roundness and surface finish values as low as Ra 0.4 µm. This product is compatible with a wide range of chemicals, making it suitable for corrosive media in addition to high mechanical loads. Each tube is inspected for concentricity, surface defects, and dimensional accuracy before shipment. We offer cut-to-length services, custom wall thicknesses, and machining of grooves, flanges, or slots to meet specific assembly requirements. The material can be bonded to metal or other substrates using standard adhesives or mechanical retention methods. For applications requiring additional stiffness or improved electrical conductivity, the carbon fiber loading can be adjusted.

• Inner diameter: 2 mm to 200 mm (0.079 in to 7.874 in)
• Wall thickness: 1 mm to 25 mm (0.039 in to 0.984 in)
• Length: up to 1,000 mm (39.37 in) standard, longer on request
• Carbon fiber content: 10%, 15%, 20%, or 25% by weight
• Color: black
• Temperature range: -200°C to +260°C (-328°F to +500°F)
• PV limit: up to 1.2 MPa·m/s (34,000 psi·ft/min) under dry conditions
• Surface finish: ground surfaces down to Ra 0.4 µm
• Tolerances: ±0.05 mm (±0.002 in) for machined surfaces

The table below summarizes mechanical and thermal properties for the standard 25% carbon fiber filled grade.

Typical applications include piston rod seals, rotary shaft bearings, guide rings, valve stem packings, and wear pads. The tube can be cut to length or machined into finished components according to customer drawings.