Low starting torque in PTFE tubing depends on the right filler package and consistent processing. For actuators, valve stems, and linear guides that must break away smoothly from rest, the 15% glass 5% MoS2 PTFE tube for low friction combines two functional fillers to reduce static friction and stabilize geometry. We supply glass and molybdenum disulfide filled PTFE tubing with tightly controlled filler dispersion, which prevents the uneven breakaway torque that can occur with poorly mixed compounds. As a focused MoS2 glass PTFE tube manufacturer, we test every production lot for coefficient of friction, dimensional stability, and wear under low-speed conditions. The resulting PTFE tube with MoS2 and fiberglass filler delivers repeatable initial movement without stick-slip, making it suitable for precision instrument parts, bushings, seals, and pump components.
The 15% glass 5% MoS2 PTFE tube is built for low-speed, low-starting-torque service. The molybdenum disulfide forms a lubricating transfer layer on mating metal or plastic surfaces, while the glass fiber reduces cold flow and improves load-bearing capacity. This combination keeps breakaway force low even after prolonged static loading, thermal cycling, or exposure to moisture. Key performance attributes and available dimensions are summarized below.
| Dimensional parameter | Standard range | Typical tolerance |
|---|---|---|
| Inside diameter | 1.0 mm – 50.0 mm | ±0.05 mm up to 10 mm; ±0.10 mm above 10 mm |
| Outside diameter | 2.0 mm – 60.0 mm | ±0.05 mm up to 15 mm; ±0.10 mm above 15 mm |
| Wall thickness | 0.5 mm – 10.0 mm | ±0.05 mm |
| Length | 100 mm – 3,000 mm | +5 mm / -0 mm standard |
| Straightness | 0.5 mm per 300 mm | — |
| Concentricity | ≤ 0.10 mm TIR | — |
| Mechanical / thermal property | Typical value | Test method |
|---|---|---|
| Specific gravity | 2.18 – 2.22 | ASTM D792 |
| Tensile strength | ≥ 20 MPa | ASTM D4894 |
| Elongation at break | ≥ 180% | ASTM D4894 |
| Hardness | 58 – 62 Shore D | ASTM D2240 |
| Deformation under load | ≤ 15% (23 °C, 15 MPa, 24 h) | ASTM D621 |
| Dynamic coefficient of friction | 0.06 – 0.10 | ASTM D1894 |
| Melting point | 327 °C ± 5 °C | ASTM D3418 |
