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.

Application

  • 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.

Seal housing recommandation

Tolerances[mm]  
NL
+ 0,2 
NH
+ 0,2 
∅ NA
H9 
∅ NI
h10 
 
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

Clamped by flange.