Standard active Back Up Ring for piston seal type ‘PD’. Normally already included in PD-type seal profiles. Designed for automatic pressure activation. Split and non-split designs available.
| Temperature Range | Max Speed | Max Pressure | Material |
| -50 °C … +100 °C | ECOTAL | ||
| -40 °C … +100 °C | ECOMID | ||
| -200 °C … +260 °C | ECOFLON 2 |