| 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/h9 | d1/h8 | L/+0.2 | L1 | Rmax | C | s* | |
| ＞ | ≤ | |||||||
| 13 | 40 | D - 8 | D - 3 | 10 | 18 | 0.4 | 4.0 | 0.35 |
| 40 | 80 | D - 10 | D - 3 | 10 | 18 | 0.4 | 4.0 | 0.40 |
| 80 | 120 | D - 15 | D - 4 | 15 | 23 | 0.4 | 5.0 | 0.50 |
| 120 | 200 | D - 20 | D - 5 | 20 | 33 | 0.4 | 6.0 | 0.65 |
| 200 | 400 | D - 25 | D - 6 | 25 | 39 | 0.4 | 8.5 | 0.75 |
| 400 | 600 | D - 30 | D - 8 | 30 | 44 | 0.4 | 10 | 1.00 |
| 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 | Support ring | Minimum °C | Maximum °C | Maximum m/s | Maximum bar (MPa) | |
 PU |
|
-30 | 100 | 0.5 | 250(25) | |
 HPU |
-20 | |||||
 SPU |
0.7 | |||||
 TPU |
-40 | 0.5 | ||||
| Ordering example | |
| Introduction | Piston seal TK17-P |
| D x d/d1x L/L1[mm] | 100 x 85 / 96 x 15 / 23 |
| Sealing material | PU / POM |
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