DK 138

Sealing for hydraulics and pneumatics

Epidor

Piston seals

Specifications

Model DK 138 is a low-friction seal for double-acting cylinders in heavy hydraulic service. It consists of a slip ring that is energized with a DFL 109E seal, which has greater interference and groove stability than an O-ring. The ring has such a low coefficient of friction that it eliminates the problem of stick-slip.
- Tension joint of rectangular section.
- Seal free of stick-slip effect.
- Absorption of pressure peaks.
The slip ring can be machined in polyurethane and various PTFE formulations. See materials section.

Field of application

Velocity ≤ 10 m/s (≤ 0.5 m/s for C-HPU)
Temperature: according to material chosen
Pressure: up to 60 MPa (600 bar)
For 20 mm bearings ≤ ØD ≤ 580 mm (other diameters on request)