Self-lubricating
Very low coefficient of friction — the rod performs as a self-greasing bearing material without external lubrication.
Kaxite PTFE Molded Rod is compression molded from virgin PTFE resin and free-sintered to full density. The result is a homogeneous, stress-relieved round bar that machines cleanly into seals, bearings, insulators and precision parts. With a very low coefficient of friction, the material is self-lubricating and does not require external oil or grease.
Service temperature reaches −200 °C to +250 °C, and the material is chemically inert across aggressive acids, bases and solvents. Rods are available in virgin and all common filled grades, in diameters from 25 mm to 500 mm.
PTFE Molded Rod is produced by filling a cylindrical mold with virgin or filled PTFE resin, compressing it under high pressure, then free-sintering the preform above the crystalline melting point. The controlled heating and cooling cycle relieves internal stress and yields a dense, homogeneous rod that machines cleanly and holds tight tolerances.
Because the material is self-lubricating, it is often used as a direct replacement for lubricated metal bearings and bushings in food, pharmaceutical and chemical equipment where external lubrication is not acceptable.
Molded rod is the preferred form when larger diameters, thicker walls or higher-density material are needed. Compared with extruded rod, molded PTFE offers better dimensional stability and lower internal stress, which reduces distortion during machining and improves performance in close-tolerance sealing and bearing applications.
For diameters below 25 mm, extruded rod is often a more economical option. Send us your finished part drawing and we can advise which stock form is best for your application.
Very low coefficient of friction — the rod performs as a self-greasing bearing material without external lubrication.
Continuous working temperature up to 250 °C, with service range extending from −200 °C to +250 °C.
Resists aggressive acids, bases and solvents — does not react with or contaminate the media it contacts.
Among the best electrical insulation of any plastic — suitable for high-frequency and high-voltage electrical parts.
Non-stick surface resists product buildup, making the material suitable for food and pharmaceutical contact.
Homogeneous, stress-relieved stock that machines cleanly on standard lathes and CNC equipment.
Precision machined components for medical devices and analytical equipment.
Insulators, spacers and dielectric parts for high-frequency and high-voltage equipment.
Base material for machining PTFE gaskets, lip seals, chevron rings and O-ring backups.
Self-lubricating bearing bushes, thrust washers, piston rings and slide plates.
Rollers, guides and contact parts where non-stick and non-contaminating behaviour is required.
Valve seats, diaphragms, pump parts and corrosion-resistant internals.
| Property | Unit / Standard | Typical | Range |
|---|---|---|---|
| Bulk density | g/l / ASTM D 4894 | 476 | 450–500 |
| Tensile strength | MPa / ASTM D 4984 | 32.7 | 210–350 |
| Specific gravity | ASTM D792 | 2.14 | 2.1–2.2 |
| Working temperature | °C | 250 | up to 250 |
| Hardness | Shore D / ASTM D 4894 | 58 | 52–58 |
| Elongation | % / ASTM D 4894 | 286 | 250–400 |
| Shrinkage | % / ASTM D-570 | 0 | 0 |
Outside diameter in mm and required cut length, or the finished part drawing if we should machine to size.
Virgin PTFE for chemical, food and electrical service, or a filled grade for higher load and wear resistance.
Number of rods, or number of finished parts per size.
Required delivery date and destination port so we can schedule production and shipping.
Material certificate, dimensional inspection report or any other documentation your project requires.
Send your diameter, length, grade or finished part drawing — our engineers will reply with pricing and lead time within 24 hours.
Related products: Extrusion PTFE Rods PTFE Extruded Rod PTFE Tubes PTFE Sheets PTFE Gaskets
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No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
