Products

Carbon filled PTFE tubing with high load capacity is a superior upgrade over standard PTFE tubes in demanding industrial and sealing environments. By blending carbon fibers or carbon powder into the PTFE matrix, the material achieves a higher load-bearing limit, better creep resistance, and improved thermal conductivity while still maintaining excellent chemical compatibility. This makes it a preferred choice for high PV (pressure-velocity) conditions where heat generation and wear are critical concerns. In such systems, a carbon fiber PTFE tube for high PV applications helps prevent premature failure and maintains seal integrity. For sliding or reciprocating components that encounter abrasive media, a high wear resistance carbon PTFE tube offers extended service intervals and reduced maintenance costs. As a professional carbon fiber reinforced PTFE tube supplier, we ensure consistent compound formulation, tight dimensional control, and full traceability. In sealing applications, the use of a PTFE carbon tube dynamic seal reduces breakout friction and improves response in hydraulic and pneumatic systems under high radial loads.

Carbon Filled PTFE Tubing High Load is engineered in two standard carbon content options: 10% carbon by weight for general high-load service and 25% carbon by weight for maximum rigidity and wear performance. The tubing is manufactured through isostatic molding and ram extrusion, resulting in a dense and non-porous structure that resists deformation under sustained compressive stress. Typical applications include bushings, wear rings, dynamic seals, valve seats, and pump components operating at high pressure-velocity conditions. The carbon reinforcement significantly lowers the coefficient of thermal expansion and raises the load-carrying capability compared to unfilled PTFE. This product maintains low gas permeability and offers controlled electrical conductivity for static dissipation when required. In high-load bearing applications, the tube resists extrusion and cold flow, which are common failure modes for standard PTFE under continuous compressive stress. The material also performs reliably in contact with hydraulic fluids, mineral oils, mild acids, and many solvents, making it suitable for off-highway equipment, industrial pumps, and chemical processing hardware.

Standard configuration options for this product line are summarized below:

• Inner diameter range: 0.5 mm to 80 mm
• Outer diameter range: 2 mm to 100 mm
• Wall thickness range: 0.25 mm to 25 mm
• Length options: continuous coils up to 3 meters, or cut-to-length pieces
• Carbon filler: 10% or 25% by weight, uniform dispersion
• Color: black or dark gray
• Machining allowance: +0.5 mm to +1.0 mm on OD for finish turning

Detailed material data for both grades are provided in the table below:

Dimensional tolerances are controlled according to ISO 13000 or customer-specific drawings. Standard tolerance classes include:

• ID tolerance: ±0.05 mm for diameters up to 10 mm, ±0.10 mm for larger sizes
• OD tolerance: ±0.10 mm for diameters up to 25 mm, ±0.15 mm for larger sizes
• Wall thickness variation: ±0.05 mm
• Cut length tolerance: ±0.5 mm

Each batch is tested for carbon dispersion, density, tensile strength, and surface finish. Non-destructive testing and material certificates are available upon request.