Hydraulic, single-acting
O-Ring-activated symmetric Piston Seal with sharp-edged sealing lips. Provides good sealing effect for high viscosity fluids. Not recommended for new designs (profile S03-P is preferred).
| Temperature Range | Max Speed | Max Pressure | Sealing Element | O-Ring |
| -30 °C … +100 °C | 0.5 m/s | 400 bar (5800 psi) | ECOPUR | NBR (70 Shore A) |
| -20 °C … +100 °C | 0.5 m/s | 400 bar (5800 psi) | H-ECOPUR | NBR (70 Shore A) |
| -30 °C … +100 °C | 0.5 m/s | 400 bar (5800 psi) | T-ECOPUR | NBR (70 Shore A) |
| -20 °C … +100 °C | 0.7 m/s | 400 bar (5800 psi) | S-ECOPUR | NBR (70 Shore A) |
| -30 °C … +100 °C | 0.5 m/s | 400 bar (5800 psi) | G-ECOPUR | NBR (70 Shore A) |