| 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 | OD | s* | |||
| ＞ | ≤ | 20 bar | 100 bar | 250 bar | |||||
| 10 | 15 | D - 4.9 | 2.2 | 0.4 | 2.5 | 1.78 | 0.35 | 0.22 | 0.13 |
| 15 | 40 | D - 7.5 | 3.2 | 0.6 | 3.5 | 2.62 | 0.50 | 0.30 | 0.16 |
| 40 | 80 | D - 11 | 4.2 | 1.0 | 4.5 | 3.53 | 0.60 | 0.34 | 0.18 |
| 80 | 133 | D - 15.5 | 6.3 | 1.3 | 5.0 | 5.33 | 0.75 | 0.40 | 0.21 |
| 133 | 330 | D - 21 | 8.1 | 1.8 | 6.0 | 7.00 | 0.85 | 0.45 | 0.24 |
| 330 | 600 | D - 24.5 | 8.1 | 1.8 | 8.0 | 7.00 | 1.00 | 0.53 | 0.28 |
| The extrusion gap values shown in the table above apply to temperatures below 70 °C; higher temperatures require lower extrusion gaps. | |||||||||
| Operating parameters | ||||||
| Material | Temperature | Speed | Pressure | |||
| Sealing components | Elastomer | Minimum °C | Maximum °C | Maximum m/s | Maximum bar (MPa) | |
 PU |
NBR70 | -30 | +100 | 1 | 250(25) | |
 HPU |
-20 | |||||
 SPU |
1.4 | |||||
 TPU |
MVQ70 | -50 | +110 | 1 | ||
| Ordering example | |
| Introduction | Piston seal TK08-P |
| D x d x L [mm] | 100 x 84.5 x 6.3 |
| Sealing material | PU / NBR70 |
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