As a dedicated manufacturer of high-performance polymer components, we specialize in producing precision PTFE tubing reinforced with bronze filler for demanding industrial applications. Our role as a metal filled PTFE tube supplier enables us to control raw material quality, mixing ratios, sintering profiles, and final machining under one roof. This vertical integration ensures lot-to-lot consistency and allows us to offer customized dimensions that many standard distributors cannot provide. The bronze filled PTFE tube for industrial bushing is among the most widely specified products in our catalog because it delivers the low-friction surface of PTFE while bronze particles provide structural reinforcement and improved thermal conductivity. In high-cycle bearing applications, engineers often evaluate this material against copper filled PTFE tubing wear resistance; bronze-filled grades tend to offer better shape stability under heavy loads and more predictable wear patterns in oscillating or rotating bushings. The bronze PTFE tube high load capacity is particularly valued in hydraulic cylinder pivot points, agricultural linkage systems, conveyor rollers, and off-highway equipment where greaseless operation reduces maintenance and contamination risk. We machine each tube to tight concentricity and squareness specifications, and we can supply cut-to-length sleeves, flanged bushings, or custom profiles to match your assembly requirements.
Our PTFE bronze filled tube is manufactured from virgin PTFE resin compounded with a uniformly dispersed bronze powder, typically at 40% or 60% bronze by weight. The filler concentration directly controls the balance between mechanical strength, thermal conductivity, and machinability. A 40% bronze compound offers a good combination of ductility and wear resistance for moderate load applications, while a 60% bronze compound provides maximum compressive strength for static or oscillating bushings under high radial loads. Every production batch is cold compressed and then sintered in a digitally controlled oven to eliminate internal voids and create a dense, homogeneous tube wall. After sintering, the tubes are sized and centerless ground to achieve tight dimensional accuracy without surface micro-cracks that can shorten service life.
| Property | 40% Bronze Filled PTFE | 60% Bronze Filled PTFE | Test Method |
|---|---|---|---|
| Specific gravity | 2.90 g/cm³ | 3.20 g/cm³ | ASTM D792 |
| Tensile strength | 18 MPa | 22 MPa | ASTM D638 |
| Elongation at break | 150% | 80% | ASTM D638 |
| Compressive strength (1% strain) | 12 MPa | 18 MPa | ASTM D695 |
| Deformation under load (13.7 MPa, 24 h, 23°C) | 6% | 4% | ASTM D621 |
| Thermal conductivity | 0.45 W/m·K | 0.65 W/m·K | ASTM C177 |
| Linear thermal expansion | 10 × 10⁻⁵ /°C | 8 × 10⁻⁵ /°C | ASTM D696 |
| Hardness, Shore D | 62 | 65 | ASTM D2240 |
| Dynamic coefficient of friction (dry, vs. steel) | 0.06 – 0.09 | 0.05 – 0.08 | Internal test |
Each PTFE bronze filled tube is inspected for dimensional accuracy, ovality, surface finish, and material consistency before release. We support customers with material certificates, batch traceability, and optional CMM or optical measurement reports for critical bushing dimensions. Standard tubes are available from stock for common sizes, while custom diameters and wall thicknesses can be produced in as little as 7–10 working days depending on quantity. The tubes are packed in moisture-resistant film and rigid sleeves to prevent distortion during shipping, and export orders are palletized according to international freight standards.
Common applications for this material include pivot bushings in hydraulic cylinders, wear rings in pumps, guide bushings in injection molds, trunnion bearings in agricultural equipment, and sliding pads in bridge or structural bearings. Because the bronze filler increases thermal conductivity, the tube dissipates frictional heat more effectively than unfilled PTFE, which reduces the risk of heat-induced dimensional change and extends service intervals in continuous-duty operations. For engineers and procurement teams seeking a reliable, high-load polymer bearing solution, this PTFE bronze filled tube offers an excellent balance of performance, machinability, and long-term cost efficiency.
