| Surface roughness | Rtmax | Ra |
| Sliding surface | ≤ 2.5 µm | 0.1–0.5 µm |
| Trough bottom | ≤ 6.3 µm | ≤ 1.6 µm |
| Trough 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* | ||||
| ＞ | ≤ | 20 bar | 100 bar | 200 bar | 400 bar | ||||
| 13 | 25 | D - 8 | 6.0 | 0.4 | 3.5 | 0.33 | 0.18 | 0.11 | 0.05 |
| 25 | 50 | D - 10 | 7.0 | 0.4 | 4.0 | 0.37 | 0.22 | 0.16 | 0.10 |
| 50 | 75 | D - 12 | 8.0 | 0.4 | 4.5 | 0.42 | 0.27 | 0.20 | 0.14 |
| 75 | 150 | D - 15 | 10.0 | 0.4 | 5.0 | 0.46 | 0.31 | 0.25 | 0.19 |
| 150 | 300 | D - 20 | 12.0 | 0.4 | 6.0 | 0.54 | 0.39 | 0.32 | 0.26 |
| 300 | 500 | D - 25 | 18.0 | 0.4 | 8.5 | 0.61 | 0.46 | 0.39 | 0.33 |
| 500 | 750 | D - 30 | 20.0 | 0.4 | 10.0 | 0.67 | 0.52 | 0.45 | 0.39 |
| 750 | D - 40 | 26.0 | 0.4 | 13.0 | 0.67 | 0.52 | 0.45 | 0.39 | |
| The extrusion gap values shown in the table above are applicable to temperatures below 70°C. Higher temperatures require lower extrusion gaps. |
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| Operating parameters | |||||
| Material | Temperature | Speed | Pressure | ||
| Sealing components | Minimum °C | Maximum °C | Maximum m/s | Maximum bar (MPa) | |
 PU |
-30 | +110 | 0.5 | 400 (40) | |
 HPU |
-20 | ||||
 SPU |
0.7 | ||||
 TPU |
-50 | 0.5 | |||
| Ordering example | |
| Introduction | Piston Seal Ring TK01-P |
| D x d x L [mm] | 100 x 85 x 10 |
| Sealing material | PU |
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