Rod Seal XSRS91

Function:
Rod seals are designed to seal the pressurized hydraulic fluid against the atmosphere, preventing leakage and pollution of the environment.

Features:
  • Asymmetrical, single acting rod seal, designed with interference of the preload element on the OD and slight interference of the PTFE glide ring on the ID.
  • High pressure force because of a machined rubber preload element.
  • Less relative movement of the rubber part compared to an O-Ring giving the seal a higher wear resistance.
  • 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.
  • Can be used in grooves where no O-Ring is possible.

Application

  • Reciprocating rods in hydraulic cylinders, plungers in heavy-duty applications.
  • Max. pressure 400 bar, max. speed 10 m/s.
  • Tandem arrangement possible.

    • Seal housing recommandation

    Tolerances[mm]  
    L < 10 mm
    		+ 0,2 
    L ≥ 10 mm
    		+ 0,3 
    ∅ NA
    		H10 
    ∅ NI
    		f8 
     
    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!