o-ring tolerances | FEP and PFA o-rings
Important: In principle, there is no official tolerance standard for FEP encapsulated O-rings. The figures in the two tables are based on our experience and are only intended as a rough guide.
Tolerances inner diameter D1 (mm)
| From Ø | To Ø | Tolerance |
|---|---|---|
| 0.00 | 12.70 | ± 0.27 |
| 12.70 | 25.40 | ± 0.39 |
| 25.40 | 38.10 | ± 0.52 |
| 38.10 | 50.80 | ± 0.64 |
| 50.80 | 63.50 | ± 0.74 |
| 63.50 | 88.90 | ± 0.97 |
| 88.90 | 101.60 | ± 1.09 |
| 101.60 | 127.00 | ± 1.31 |
| 127.00 | 152.40 | ± 1.53 |
| 152.40 | 177.80 | ± 1.78 |
| 177.80 | 203.20 | ± 1.99 |
| 203.20 | 254.00 | ± 2.61 |
| 254.00 | 330.20 | ± 3.04 |
| 330.20 | 406.40 | ± 3.62 |
| 406.40 | 557.11 | ± 4.19 |
557.11 | 762.10 | ± 4.98 |
762.10 | 1000.00 | ± 5.71 |
Tolerances cord thickness D2 (mm)
From Ø | Up to Ø | Tolerance |
|---|---|---|
| 1.78 | 2.00 | ± 0.10 |
| 2.00 | 2.62 | ± 0.12 |
| 2.62 | 3.60 | ± 0.15 |
| 3.60 | 5.70 | ± 0.25 |
| 5.70 | 6.99 | ± 0.30 |
| 6.99 | 9.52 | ± 0.40 |
| 9.52 | 12.70 | ± 0.50 |
| 12.70 | 15.00 | ± 0.60 |
| 15.00 | 15.90 | ± 0.70 |
| 15.90 | 18.00 | ± 0.80 |
| 18.00 | 19.05 | ± 0.90 |
| 19.05 | 20.63 | ± 1.00 |
| 20.63 | 25.40 | ± 1.20 |
