VMQ
Material 50D6
Hot air, weathering, dielectric applications.
Properties
| Family | VMQ |
|---|---|
| Standard | NF EN 2260 / NF L 17-250 |
| Nominal hardness | 60 Shore A |
| Measured IRHD hardness | 57 |
| Continuous service temperature | −55 to +225 °C |
| Short-term temperature | −55 to +260 °C |
| Storage group | IV |
Properties measured at qualification
Qualification tests of compound 50D6 to NF L 17-250, carried out by an independent test laboratory. “—”: measured value with no requirement in the standard.
| Property | Requirement | Measured |
|---|---|---|
| Initial state | ||
| Hardness IRHD (°) | 56-65 | 57 |
| Hardness Shore A (points) | 60 | 54 |
| Tensile strength (MPa) | ≥5 | 7.1 |
| Elongation at break (%) | ≥180 | 362 |
| Stress at 100 % elongation (MPa) | — | 1.9 |
| Tear strength (kN/m) | ≥9 | 11 |
| Density (Mg/m³) | ±0.02 between deliveries | 1.25 |
| Colour | — | Red |
| Lubricant immersion — 70 h at 150 °C in IRM 901 | ||
| Change in IRHD hardness (°) | -10 to 0 | -8 |
| Max. change in tensile strength (%) | -20 | -8.5 |
| Max. change in elongation at break (%) | -15 | -5.5 |
| Change in volume (%) | 0 to +10 | 5.6 |
| Lubricant immersion — 70 h at 150 °C in fluid 101 | ||
| Change in volume (%) | 0 to 35 | 29.0 |
| Heat ageing — 70 h at 225 °C in air | ||
| Change in IRHD hardness (°) | ±10 | 0 |
| Max. change in tensile strength (%) | -20 | -16.9 |
| Max. change in elongation at break (%) | -40 | -18.0 |
| Compression set | ||
| After 70 h at 150 °C in air (%) | ≤40 | 6.2 |
| Temperature retraction | ||
| Initial state — TR 10 (°C) | ≤-40 | -41.1 |
O-rings in this material in the catalogue
327 references · sorted by inside diameter.