Piston Seal XSPS219

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 no interference on the static sealing diameter.
  • Preload effected through V-spring.
  • Dynamic sealing lip shorter than static lip to avoid drag pressure.
  • Excellent static and dynamic sealing performance.
  • Useable for short and long stroke lengths.
  • Low friction in dry running or poor lubrication conditions.
  • Negligible tendency to “stick-slip” effect, small break away loads.

  • Reciprocating and swivelling pistons in hydraulic cylinders, plungers.
  • Chemical and pharmaceutical industry, aggressive fluids and high temp.
  • Max. pressure 160 bar, max. speed 15 m/s.

Tolerances [mm]   
L < 10 mm
+ 0,2  
L ≥ 10 mm
+ 0,3  
∅ NA
H9  
∅ NI
h10  
 
Surface roughness Rtmax [ µ]  Ra [ µ] 
Bottom of groove
≤ 6,3 ≤ 1,6
Face of groove
≤ 15 ≤ 3
 
Sliding surface Rtmax [ µ]  Ra [ µ] 
PU, elastormeres
≤ 2,5 ≤ 0,1 - 0,5
PTFE
≤ 2 ≤ 0,05 - 0,3

Installation in open housing, snap-in installation possible in special designed housings.