A159 hydraulic seals
A159 rod seals are composed of a high performance PU ring and an NBR O-ring.
They are designed as an altrernative for seals made of PTFE material.
Advantages of A159 over PTFE seals:
- No need for special assembly apparatus or conical sleeves during assembly.
- Very good price advantage
- Higher extrusion resistance
- Better sealing behavior
- Higher pressure resistance
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TECHNICAL DATA |
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Working pressure |
500 bar |
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Working temperature |
-30 +105 °C |
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Sliding speed |
0.5 m/s |
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Material |
PU 98 + NBR 70 |
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Media |
Mineral base hydraulic oils |
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Surface Roughness |
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Ra |
Rmax |
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Dynamic surface |
≤ 0.4 μm |
≤ 3.2 μm |
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Groove base |
≤ 1.6 μm |
≤ 6.3 μm |
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Groove flanks |
≤ 3.2 μm |
≤ 16 μm |
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Maximum Permissible Gap |
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Housing length (mm) |
Pressure (bar) |
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150 |
250 |
400 |
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2.2 |
0.25 |
0.20 |
0.15 |
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3.2 |
0.30 |
0.20 |
0.10 |
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4.2 |
0.35 |
0.25 |
0.15 |
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6.3 |
0.40 |
0.25 |
0.20 |
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8.1 |
0.50 |
0.30 |
0.20 |
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Page 8 of 9
