K 26 is a double acting complete piston seal which consists of a steel plate vulcanized with elastomeric nitrile rubber using special production methods. The sealing lips do have springs in order to increase the preload.

PRODUCT ADVANTAGES

  • Good sealing performance at low pressures due to the reason having spring on the sealing lips

  • Long service life

  • Ready to fit complete piston

  • Also used in pneumatic systems

APPLICATION

Short stroke, low pressure hydraulic cylinder and special pneumatic cylinders.

INSTALLATION

K 26 is pushed onto the piston rod with the rubber layer on the clamping flange towards the rod and fixed by fastening. The nut has to be secured. The sliding surface and the cylinder bore should be oiled with an oil that must not go into the reaction with the sealing element during the installation process. Special precautions has to be taken at the end of the stokes to avoid damaging of the sealing lips.

NOTES

It is recommended to have 50% to 90% of the working surface material contact area value.

MaterialCode
NBR 90 SHORE ANBR9001
STEEL ST37FE9901
STAINLESS STEEL SPRINGCN9901
Surface roughnessRaRmax
Sliding Surface ØD≤0.4 μm≤4 μm

OPERATING CONTITIONS

MediaMineral oils (DIN 51524)HFA HFBHFCCompressed Air
Temperature-30 °C
+105 °C		+5 °C
+60 °C		-30 °C
+60 °C		-30 °C
+105 °C
PressureDiagramDiagramDiagram16 bar
Speed≤0.5 m/sec≤0.5 m/sec≤0.5 m/sec≤0.5 m/sec

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