| Surface roughness | Rtmax | Ra |
| Sliding surface | ≤ 2 µm | 0.05-0.3 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 | |||||||||
| D/H9 | d/h9 | L/+0.2 | C | Maximum gap S/mm | O-ring cross-section | X-ring cross-section | |||
| ≥ | ＜ | 10 Mpa | 20 Mpa | 40 Mpa | |||||
| 15 | 40 | D - 11 | 4.2 | 5 | 0.25 | 0.15 | 0.1 | 3.53 | 1.78 |
| 40 | 80 | D - 15.5 | 6.3 | 8 | 0.3 | 0.2 | 0.15 | 5.33 | 1.78 |
| 80 | 133 | D - 21 | 8.1 | 10 | 0.3 | 0.2 | 0.15 | 6.99 | 2.62 |
| 133 | 253 | D - 24.5 | 8.1 | 15 | 0.3 | 0.2 | 0.15 | 6.99 | 2.62 |
| 253 | 463 | D - 28 | 9.5 | 20 | 0.45 | 0.3 | 0.25 | 8.4 | 3.53 |
| 463 | D - 35 | 11.5 | 20 | 0.55 | 0.4 | 0.25 | 10 | 5.33 | |
| 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) | |
 PTFE g |
NBR70 | -30 | +100 | 2 | 400(40) | |
 PTFE b |
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 PTFE c |
FKM70 | -20 | +200 | |||
| Ordering example | |
| Introduction | Piston seal TK08-Q |
| D x d x L [mm] | 200 x 175.5 x 8.1 |
| Sealing material | PTFE b / NBR70 |
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