The PUA is a popular non-symmetrical piston seal.The knife trimmed, beveled lip contacts the bore to provide enhanced low to high pressure sealing and wiping action, providing excellent wear, extrusion and compression set resistance. PUA is a uni-directional seal. Two seals can be placed on a piston, back to back, in separate glands offering bidirectional fluid sealing.
| Materials | Operating Condition | ||
| Temperature ℃ | Pressure Range Mpa | Speed m/s | |
| PU | -30~110 | 35 | 0.5 |
