| Surface roughness | Rtmax | Ra |
| Sliding surface | ≤ 2 µm | 0.05-0.3 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* | ||||
| ＞ | ≤ | 100 bar | 200 bar | 400 bar | 600 bar |
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| 15 | 50 | D - 10 | 5.0 | 0.3 | 4.0 | 0.40 | 0.30 | 0.20 | 0.10 |
| 50 | 60 | D - 15 | 7.5 | 0.4 | 5.0 | 0.50 | 0.30 | 0.20 | 0.10 |
| 60 | 200 | D - 20 | 10.0 | 0.4 | 6.0 | 0.60 | 0.40 | 0.25 | 0.15 |
| 200 | 300 | D - 25 | 12.5 | 0.4 | 8.5 | 0.60 | 0.40 | 0.25 | 015 |
| 300 | 530 | D - 30 | 15.0 | 0.8 | 10.0 | 0.70 | 0.50 | 0.30 | 0.20 |
| 530 | 680 | D - 35 | 17.5 | 1.2 | 13.0 | 0.80 | 0.60 | 0.50 | 0.20 |
| 680 | 1500 | D - 40 | 20.0 | 1.2 | 15.0 | 1.00 | 0.70 | 0.60 | 0.30 |
| The extrusion gap values shown in the table above are applicable 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 |
 NBR |
-30 | +100 | 10 | 600 (60) | |
 PTFE b |
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 PTFE c |
 FKM |
-20 | +200 | |||
| Ordering example | |
| Introduction | Piston seal TK08-ES |
| D x d x L [mm] | 100 x 80 x 10 |
| Sealing material | PTFE b / NBR |
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