Points to consider when designing an O-ring gland:
- Radial installation, static and dynamic (fig. 1)
- Axial installation, static (fig. 2)
- Surface finish depending on application
Design advice for groove dimensions
The indicated values can not be assumed for all compounds, shore hardnesses and applications. They are given as a guideline for most seal applications. For special applications, please contact our technical staff.
The sizes marked in blue are cross sections which are ISO/DIN recommended and are the most common. All dimensions in mm.
| Cross Section (c/s) | Radial Installation | Axial InstallationRadius | ||||
|---|---|---|---|---|---|---|
| c/s d1 | Gland Depth | Groove Width | Gland Depth | Groove Width | ||
| dynamic t1 + 0.05 |
static t + 0.1 |
b1 + 0.25 | h + 0.05 | b2 + 0.25 | r ± 0.25 | |
| 1 | - | 0.7 | 1.4 | 0.7 | 1.4 | 0.2 |
| 1.5 | 1.25 | 1.1 | 2 | 1.1 | 2.1 | 0.3 |
| 1.78* | 1.45 | 1.3 | 2.4 | 1.3 | 2.6 | 0.3 |
| 2 | 1.65 | 1.5 | 2.7 | 1.5 | 2.8 | 0.3 |
| 2.5 | 2.15 | 1.85 | 3.3 | 1.85 | 3.4 | 0.3 |
| 2.62* | 2.25 | 2 | 3.6 | 2 | 3.8 | 0.3 |
| 3 | 2.6 | 2.3 | 4 | 2.3 | 4 | 0.6 |
| 3.5 | 3.05 | 2.65 | 4.6 | 2.65 | 4.7 | 0.6 |
| 3.53* | 3.1 | 2.7 | 4.8 | 2.7 | 5 | 0.6 |
| 4 | 3.5 | 3.1 | 5.2 | 3.1 | 5.3 | 0.6 |
| 4.5 | 4 | 3.5 | 5.8 | 3.5 | 5.9 | 0.6 |
| 5 | 4.4 | 4 | 6.6 | 4 | 6.7 | 0.6 |
| 5.33* | 4.7 | 4.3 | 7.1 | 4.3 | 7.3 | 0.6 |
| 5.5 | 4.8 | 4.5 | 7.1 | 4.5 | 7.3 | 0.6 |
| 6 | 5.3 | 4.9 | 7.4 | 4.9 | 7.6 | 0.6 |
| 6.5 | 5.7 | 5.4 | 8 | 5.4 | 8.2 | 1 |
| 6.99* | 6.1 | 5.8 | 9.5 | 5.8 | 9.7 | 1 |
| 7 | 6.1 | 5.8 | 9.5 | 5.8 | 9.7 | 1 |
| 7.5 | 6.6 | 6.3 | 9.7 | 6.3 | 9.9 | 1 |
| 8 | 7.1 | 6.7 | 9.8 | 6.7 | 10 | 1 |
| 9 | 8.1 | 7.7 | 10.6 | 7.7 | 10.9 | 1.5 |
| 9.5 | 8.6 | 8.2 | 11 | 8.2 | 11.4 | 1.5 |
| 10 | 9.1 | 8.6 | 11.6 | 8.6 | 12 | 2 |
| 12 | 11 | 10.6 | 13.5 | 10.6 | 14 | 2 |