K15 is a two piece double acting sealing set which consists of a special designed polyurethane seal ring and an o-ring as energizing element.

PRODUCT ADVANTAGES

  • High static and dynamic sealing effect

  • Low axial housing heights

  • Simple groove design , one-piece piston possible

  • High abrasion resistance

APPLICATION

Light to medium duty industrial machinery, injection moulding machines, cranes and loading platforms.

INSTALLATION

Easily assembled on one-piece piston. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil.

NOTES

It is recommended to use with two piston guide rings in long stroke cylinders , one guide ring in short stroke and under low radial loads. The permissible sealing gap values of K15 piston seal is given in the below table.

MaterialCode
NBR 70 SHORE ANBR7001
PU 90 SHORE APU9501
Surface roughnessRaRmax
Sliding Surface Ød≤0.4 μm≤3.2 μm
Groove Base ØD≤1.6 μm≤6.3 μm
Groove Flanks≤3.2 μm≤16 μm

PERMISSIBLE SEALING GAP

B (mm)Smax (mm)
3.20.25
4.20.25
6.30.3
8.10.3

OPERATING CONTITIONS

MediaMineral oils (DIN 51524)HFA HFBHFC
Temperature-30 °C
+100 °C		+5 °C
+50 °C		-30 °C
+40 °C
Pressure≤250 bar≤250 bar≤250 bar
Speed≤0.5 m/sec≤0.5 m/sec≤0.5 m/sec

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