UNS piston rod seals provide excellent mechanical strength and reliable sealing performance under harsh working conditions.
Technical Data
Material: PU 93±2 shoreA
Pressure: ≤ 31.5 MPa
Speed: ≤ 1 m/s
Temperature: -35°C to +100°C
Medium: Mineral hydraulic oils, water, and emulsions.
Applications
Hydraulic cylinders (rod side).
- Mobile machinery.
- Construction and forestry equipment.
- Mining and agricultural machinery.
- Suitable for use with RS-type step seals for heavy-duty systems.
Features
Excellent sealing performance at both low and high pressure.
- Compact design with large cross-section for high durability.
- Low friction at low pressure range.
- Easy to install and replace.
- Long service life even in demanding environments.
Installation Profile
Installation Tips
To prevent damage to sealing lips, sharp edges on the piston rod and housing must be chamfered or protected during installation.
Specification Table (mm)
| Name | d | D | h |
| UNS-8 | 8 | 18 | 8 |
| UNS-9 | 9 | 19 | 8 |
| UNS-10 | 10 | 20 | 8 |
| UNS-14 | 14 | 24 | 8 |
| UNS-15 | 15 | 25 | 8 |
| UNS-16 | 16 | 26 | 8 |
| UNS-18 | 18 | 28 | 8 |
| UNS-20 | 20 | 30 | 8 |
| UNS-25 | 25 | 35 | 8 |
| UNS-28 | 28 | 43 | 10 |
| UNS-30 | 30 | 45 | 10 |
| UNS-35 | 35 | 50 | 10 |
| UNS-40 | 40 | 55 | 10 |
| UNS-45 | 45 | 60 | 10 |
| UNS-48 | 48 | 63 | 10 |
| UNS-50 | 50 | 65 | 10 |
| UNS-53 | 53 | 73 | 12 |
| UNS-55 | 55 | 75 | 12 |
| UNS-56 | 56 | 76 | 12 |
| UNS-60 | 60 | 80 | 12 |
| UNS-63 | 63 | 83 | 12 |
| UNS-65 | 65 | 85 | 12 |
| UNS-67 | 67 | 87 | 12 |
| UNS-70 | 70 | 90 | 12 |
| UNS-71 | 71 | 91 | 12 |
| UNS-75 | 75 | 95 | 12 |
| UNS-80 | 80 | 100 | 12 |
Customization
At QZSEALS, we specialize in custom-made hydraulic piston & rod seals. We can produce UNS piston seals according to your drawings, samples, or special material requirements by mold injection or CNC machining.
Our professional sealing engineers ensure performance and durability even in demanding conditions.
Why Choose QZSEALS
- Over 10 years of sealing expertise.
- Wide material options: NBR, FKM, PU, PTFE, EPDM, and more.
- ISO-compliant quality control.
- Fast global delivery & reliable after-sales support.
- OEM / ODM custom seal manufacturing service.
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