Piston Seal XSPS16A

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.
  • Long sealing lip compensates for radial inaccuracy or excentricity.
  • Useable for long stroke lengths.
  • Low break-away load after long standstills.
  • Seal design tends to “stick-slip” effect.

  • Reciprocating pistons in hydraulic and pneumatic cylinders.
  • Replacement for seal designs (leather seals etc.) used in old cylinders.
  • Max. pressure 400 bar, max. speed 0.5 m/s for all HPU types.
  • Max. pressure 400 bar, max. speed 0.7 m/s for HPU94 GM.
  • Max. pressure 160 bar, max. speed 0.5 m/s for all elastomer types.

Tolerances [mm]   
NL
+ 0,2  
NH
+ 0,2  
∅ 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

Clamped by flange.