| Surface roughness | Rtmax | Ra |
| Sliding surface | ≤ 2.5 µm | 0.1–0.5 µm |
| Groove bottom | ≤ 6.3 µm | ≤ 1.6 µm |
| Groove side | ≤ 15 µm | ≤ 3 µm |
| Bearing area: 50-95% and 0.5 Rz cutting depth (based on Cref = 0%) | ||
| Recommended Size mm | Maximum gap mm | |||||
| D/H9 | d/h10 | L/+0.2 | Rmax | C | s* | |
| > | ≤ | |||||
| 5 | 25 | D - 8 | 6.0 | 0.4 | 3.5 | 0.33 |
| 25 | 50 | D - 10 | 7.0 | 0.4 | 4.0 | 0.37 |
| 50 | 75 | D - 12 | 8.0 | 0.4 | 4.5 | 0.42 |
| 75 | 150 | D - 15 | 10.0 | 0.4 | 5.0 | 0.46 |
| 150 | 300 | D - 20 | 12.0 | 0.4 | 6.0 | 0.54 |
| 300 | 500 | D -25 | 18.0 | 0.4 | 8.5 | 0.61 |
| 500 | 750 | D -30 | 20.0 | 0.4 | 10.0 | 0.67 |
| 750 | D - 40 | 26.0 | 0.4 | 13.0 | 0.67 | |
| The extrusion gap values shown in the table above apply to temperatures below 70 °C. Higher temperatures require a lower extrusion gap. | ||||||
| Operating parameters | ||||||
| Material | Temperature | Speed | Pressure | |||
| Sealing components | Minimum °C | Maximum °C | Maximum m/s | Maximum bar (MPa) | ||
 PU |
-30 | +110 | 1 | 25 (2.5) | ||
 HPU |
-20 | |||||
 SPU |
2 | |||||
 TPU |
-50 | 1 | ||||
| Ordering example | |
| Introduction | Piston seal TK05-P |
| D x d x L [mm] | 100 x 85 x 10 |
| Sealing material | PU |
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