Germany MERKEL pneumatic piston ring seal -NAP300

1. Features
      Section asymmetry in the dynamic sealing lips with special pneumatic sealing edge of the piston seal.
      Section asymmetrical long and thick static sealing lip ensures seal tightly positioned at the bottom of the trench.
      This special pneumatic sealing edge seal ring with low friction and maintain an effective lubricant film a good sealing function.

2. Operating conditions
   Media: treated and dried, compressed air without lubricant (grease-coated after assembly).
   Working pressure: ≤1.2MPa (12bar)
   Temperature: -35 ℃ ~ + 80 ℃
   Line Speed: ≤1m / s

3. Material
    Hardness: High performance polyurethane 80 Shore A's.
    Grade: Simritan D 80AU 941.

4. trenches and machine processing standards
   Cylinder: Rmax≤4μm, Rp / Rz <0.5
   tp (25% Rmax) = 50% ~ 75%
   Trench floor: R max≤10μm, Rp / Rz <0.5

5. Install
   Careful installation is to ensure a good seal function prerequisites.
   Pneumatic U-rings can be assembled by hand withhold the appropriate grooves.