| Surface Roughness | TPU | PTFE | ||
| Rtmax | Ra | Rtmax | Ra | |
| Sliding Surface | ≤ 2.5 µm | 0.1–0.5 µm | ≤ 2.5 µm | 0.05 - 0.3µm |
| Trough Bottom | ≤ 6.3 µm | ≤ 1.6 µm | ≤ 6.3 µm | ≤ 1.6 µm |
| Trough Side | ≤ 15 µm | ≤ 3 µm | ≤ 15 µm | ≤ 3 µm |
| Bearing area: 50-95% and 0.5 Rz cutting depth (based on Cref = 0%) | ||||
| Recommended Size mm | ||||||
| d/f8 | D/H10 | OD | L/+0.2 | Rmax | D1/H11 | |
| < | ≥ | |||||
| 5 | 11 | d + 4.8 | 1.78 | 3.7 | 0.4 | d + 2.7 |
| 11 | 63 | d + 6.8 | 2.62 | 5.0 | 1.2 | d + 3.5 |
| 63 | 400 | d + 8.8 | 3.53 | 6.0 | 2.0 | d + 4.0 |
| 400 | 600 | d + 12.2 | 5.33 | 8.4 | 2.0 | d + 6.0 |
| Operating Parameters | ||||
| Material | Temperature | Speed | ||
| Sealing Components | Elastomer | Minimum °C | Maximum °C | Maximum m/s |
 XPU |
NBR70 | -30 | +100 | 5 |
 XSPU |
-20 | |||
 PTFE v |
NBR70 | -30 | 10 | |
 PTFE g |
||||
 PTFE b |
FPM75 | -20 | +200 | |
 PTFE c |
||||
 UHMWPE |
NBR70 | -30 | +90 | |
| MVQ70 | -55 | |||
| Ordering Example | |
| Introduction | Dust Seal TA25 - F |
| d x D x L [mm] | 70 x 78.8 x 6 |
| Sealing Material | PTFE b / NBR70 |
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