Piston Seal XSPS08B

Function:
Piston seals are designed to seal the pressurized hydraulic fluid against the atmosphere or between two pressurized spaces.

Features:
  • Asymmetrical, single acting piston seal, designed with interference of the O-Ring on the ID and slight interference of the PTFE glide ring on the OD.
  • Excellent sealing performance in low and high speeds.
  • Suitable for positioning functions.
  • Negligible tendency to “stick-slip” effect, good sliding properties.
  • Low break-away load after long standstills.
  • Excellent gap extrusion resistance due to the free space on the trailing side.

    • Application

    • Reciprocating pistons in hydraulic cylinders, plungers.
    • Dynamic seals in hydraulic systems.
    • Tandem arrangement possible.
    • Max. pressure 400 bar, max. speed 15 m/s.

    Seal housing recommandation

    Tolerances[mm]  
    L < 10 mm
    		+ 0,2 
    L ≥ 10 mm
    		+ 0,3 
    ∅ NA
    		H8 
    ∅ NI
    		h8 
     
    Surface roughnessRtmax [ µ] Ra [ µ] 
    Bottom of groove
    		≤ 6,3≤ 1,6
    Face of groove
    		≤ 15≤ 3
     
    Sliding surfaceRtmax [ µ] Ra [ µ] 
    PU, elastormeres
    		≤ 2,5≤ 0,1 - 0,5
    PTFE
    		≤ 2≤ 0,05 - 0,3

    Installation

    Snap-in installation.

    Attention: PTFE glide rings needs calibration after installation!