PDE Piston seal

Operating conditions

Pressure:    ≤ 500/700 bar (Guide and support parts unsplit, split piston)

Temperature: -30°C...+110°C

Speed:        ≤ 0,5 m/s

Fluids:         Hydraulic fluids (mineral oil based), water emulsions


(1) Sealing part, NBR

(2) Guide ring, Acetal

(3) Back-up ring, Fabric reinforced NBR or Polyester


One-piece piston (A), Two piece piston (B)

Installation chamfer, Table 1


- Excellent sealing performance at high and low pressure

- Low risk of gap damage at high temperatures

- Works well with pressure peaks and vibration

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