K 17 is a two piece double acting piston seal which consists of one special mixture PTFE profile ring and an o-ring as energizing element.

PRODUCT ADVANTAGES

  • Low friction , free of stick-slip

  • Simple groove design and low axial housing heights

  • Long service life

  • High sliding speed

  • Wide range of temperature and chemicals depending
    on the o-ring material

  • Minimum static and dynamic friction coefficient for a
    minimum energy loss and operating temperature

  • Wide range of dimensions

APPLICATION

Injection moulding machines, fork-lift trucks, loading platforms, cranes, agricultural machinery and valves for hydraulic and pneumatic systems

INSTALLATION

We recommend using special assembly tool and to have open groove design for dimensions that are smaller than Ø 40 mm. 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

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

MaterialCode
NBR 70 SHORE ANBR7001
PTFEPT6003
Surface roughnessRaRmax
Sliding Surface Ød≤0.2 μm≤2.0 μm
Groove Base ØD≤1.6 μm≤6.3 μm
Groove Flanks≤3.2 μm≤15 μm

PERMISSIBLE SEALING GAP

B (mm)Smax (mm)
150 Bar250 Bar400 Bar
2.20.30.20.15
3.20.40.250.15
4.20.40.250.2
6.30.50.30.2
8.10.60.350.25
9.50.70.50.3

OPERATING CONTITIONS

MediaMineral oils (DIN 51524)HFA HFBHFC
Temperature-30 °C
+105 °C		+5 °C
+60 °C		-30 °C
+60 °C
Pressure≤400 bar≤400 bar≤400 bar
Speed≤0.5 m/sec≤0.5 m/sec≤0.5 m/sec

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