K15
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.
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High static and dynamic sealing effect
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Low axial housing heights
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Simple groove design , one-piece piston possible
- High abrasion resistance
Light to medium duty industrial machinery, injection moulding machines, cranes and loading platforms.
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.
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.
Material | Code |
NBR 70 SHORE A | NBR7001 |
PU 90 SHORE A | PU9501 |
Surface roughness | Ra | Rmax |
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) |
3.2 | 0.25 |
4.2 | 0.25 |
6.3 | 0.3 |
8.1 | 0.3 |
OPERATING CONTITIONS
Media | Mineral oils (DIN 51524) | HFA HFB | HFC |
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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