Piston Seal Set P23


Piston Seal Set P23 is consisting of polyamide slide ring with stepped cut and an rubber ring as energising element.

Seal set P23 is duoble acting seal for hevy duty application and housing according to ISO 7425-1. The stepped cut facilitates easy instalation in small or closed housing while rubber ring square section offer protection against twisting.

Features of this seal are very high static and dynamic sealing effect, very high resistance to abrasion, resistance against pressure, extrusion, and low friction without the appearance of stick-slip.

Earth moving equipment
Mobile hydraulics
Truck cranes
Construction machinery
Agricultural equipment

Standard material
Material Set Code SN251
O-ring NBR 70 ShA, Code N4913
PA modified, Code P6411

In special applications in terms of temperature or medium-rubber compatibility, several materials are recommended and available on request.

Pressure, Speed
Working pressure, p dynamic 60 Mpa
Working pressure, p, static 80 Mpa
Running speed, v in m/s Up to 1,0 m/s
Media, Operating temperature
Material Set Code SN251
Hydraulic oils: HL, HLP -30.. +100 ˚C
HFA, HFB fluids +5..+ 50 °C
HFC fluids -30..+50 °C
HFD fluids
Mineral greases -30.. +100 ˚C
Max. permissible gap dimension, emax
Profile size Max operating pressure
L S ≤32 MPa 40 Mpa 60 Mpa 80 Mpa
4,2 5,50 0,55 0,50 0,30 0,20
6,3 7,55 0,75 0,70 0,50 0,25
8,1 10,50 1,00 0,90 0,60 0,35
Surface quality*
Surface roughness Ra Rmax
Sliding surfaces 0.05 .. 0,3μm ≤ 2,5 μm
Groove base ≤ 1,6 μm ≤ 6,3 μm
Groove flanks ≤ 3,0 μm ≤ 15 μm

*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0%