O Ring Slot Size
Metric o-ring groove designs vary greatly and choosing the right one for your application is important for maximum o-ring performance. This metric o-ring groove design reference guide will help you find the right radius, back-up, pressure and other o-ring dimensions for basic applications. Once you find the exact metric o-ring you need, you can easily order online from the world's largest o-ring inventory network.
O-ring Groove Size Calculator
An O-ring is a solid-rubber seal shaped like a doughnut or torus. When compressed between mating surfaces, an O-ring blocks the passage of liquids or gases. Parco O-rings are available in a wide range of standard and non-standard sizes that are suitable for nearly all sealing applications. Two dimensions describe the size of an O-ring: its. Metric o-ring groove designs vary greatly and choosing the right one for your application is important for maximum o-ring performance. This metric o-ring groove design reference guide will help you find the right radius, back-up, pressure and other o-ring dimensions for basic applications.
O Ring Slot Size Chart
| C/S d2 (mm) | Pressure | No Back-Up 100 Bar max | One Back-Up > 100 Bar | Two Back-Up > 100 Bar alternating | Radius | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stat | Dynam. | Pneum | P (mm) | L (mm) | P (mm) | L1 (mm) | P (mm) | L2 (mm) | r1 (mm) | |
| 1.00 | X | 0.70 | 1.40 | - | - | - | - | 0.20 | ||
| 1.50 | X | 1.14 | 2.40 | - | - | - | - | 0.30 | ||
| 1.60 | X | 1.21 | 2.40 | - | . | 0.30 | ||||
| 1.78-1.80 | X | X | 1.49 | 2.50 | 1.50 | 4.16 | 1.50 | 6.16 | 0.40 | |
| 1.78-1.80 | X | 1.58 | 2.50 | - | - | - | - | 0.40 | ||
| 1.90 | X | 1.40 | 2.60 | - | - | - | - | 0.40 | ||
| 1.90 | X | 1.55 | 2.60 | 1.55 | 4.00 | 1.55 | 5.40 | 0.40 | ||
| 2.00 | X | X | 1.68 | 2.80 | 1.70 | 4.20 | 1.70 | 5.60 | 0.40 | |
| 2.40 | X | 1.80 | 3.30 | 2.05 | 4.70 | 2.05 | 6.10 | 0.50 | ||
| 2.40 | X | 2.16 | 3.30 | - | - | - | - | 0.50 | ||
| 2.40 | X | 1.90 | 3.20 | - | - | - | - | 0.50 | ||
| 2.50 | X | 2.12 | 3.50 | 2.15 | 4.90 | 2.15 | 6.30 | 0.50 | ||
| 2.50 | X | X | 2.28 | 3.50 | - | - | - | - | 0.50 | |
| 2.62-2.65 | X | X | 2.25 | 3.25 | 2.28 | 4.65 | 2.28 | 6.50 | 0.60 | |
| 2.62-2.65 | X | 2.36 | 3.25 | - | - | - | - | 0.60 | ||
| 2.70 | X | X | 2.30 | 3.60 | 2.30 | 5.00 | 2.30 | 6.40 | 0.60 | |
| 2.95 | X | X | 2.20 | 3.90 | 2.50 | 5.30 | 2.50 | 5.30 | 0.60 | |
| 3.00 | X | 2.58 | 4.10 | 2.60 | 5.50 | 2.60 | 6.90 | 0.60 | ||
| 3.00 | X | 2.72 | 4.10 | - | - | - | - | 0.60 | ||
| 3.00 | X | 2.45 | 3.80 | - | - | - | - | 0.60 | ||
| 3.10 | X | X | 2.50 | 4.10 | 2.70 | 5.50 | 2.70 | 6.90 | 0.60 | |
| 3.50 | X | X | 2.65 | 4.60 | 3.05 | 6.00 | 3.05 | 7.40 | 0.60 | |
| 3.53-3.55 | X | 2.70 | 4.80 | 3.10 | 6.20 | 3.10 | 7.60 | 0.80 | ||
| 3.53-3.55 | X | 3.21 | 4.40 | - | - | - | - | 0.80 | ||
| 3.60 | X | X | 2.80 | 4.80 | 3.15 | 6.20 | 3.15 | 7.60 | 0.80 | |
| 4.00 | X | X | 3.46 | 5.40 | 3.51 | 6.80 | 3.51 | 8.20 | 0.80 | |
| 4.50 | X | X | 3.50 | 5.80 | 4.00 | 7.50 | 4.00 | 9.20 | 0.80 | |
| 5.00 | X | X | 4.45 | 6.70 | 4.46 | 8.50 | 4.46 | 10.30 | 0.80 | |
| 5.00 | X | 4.65 | 6.70 | - | - | - | - | 0.80 | ||
| 5.30-5.33 | X | X | 4.72 | 6.45 | 4.75 | 7.66 | 4.75 | 10.26 | 1.20 | |
| 5.30-5.33 | X | 4.85 | 6.45 | - | - | - | - | 1.20 | ||
| 5.70 | X | X | 4.60 | 7.20 | 5.00 | 8.90 | 5.00 | 10.60 | 1.20 | |
| 6.00 | X | X | 5.06 | 7.60 | 5.12 | 9.40 | 5.12 | 11.20 | 1.20 | |
| 6.00 | X | 5.30 | 7.40 | - | - | - | - | 1.20 | ||
| 6.99-7.00 | X | X | 6.05 | 8.75 | 6.10 | 10.12 | 6.10 | 13.55 | 1.50 | |
| 6.99-7.00 | X | 6.22 | 8.75 | - | - | - | - | 1.50 | ||
| 8.40 | X | 7.65 | 11.10 | 7.68 | 13.30 | 7.68 | 15.50 | 1.50 | ||
| 8.40 | X | 7.85 | 11.10 | - | - | - | - | 1.50 | ||
| 8.40 | X | 7.35 | 9.10 | - | - | - | - | 1.50 | ||