Elastomers
PU Seal
High-tensile Polyurethane (PU) U-cups, rod seals, and wiper rings for hydraulics.
Heavy-duty thermoplastic polyurethane (TPU) hydraulic seals engineered for mobile and industrial hydraulic cylinders. Exhibits exceptional tensile strength, abrasion resistance, and extrusion resistance compared to standard rubber.
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Specifications
Technical profile
- Profiles
- U-cup rod seals, piston seals, wiper/scraper rings, buffer seals
- Material grade
- High-performance ether/ester-based Polyurethane (90–95 Shore A)
- Operating pressure
- Up to 400 bar hydraulic working pressure without back-up rings
- Shaft speed
- Up to 0.5 m/s reciprocating stroking speed
- Temperature
- -35 °C to +110 °C continuous hydraulic oil temperature
- Fluid compatibility
- Mineral hydraulic oils (HLP), lubricating oils, water-glycol
Specifications are typical and vary by variant. Share your duty conditions for an exact recommendation.
Key benefits
Why this product
- 5× to 10× higher wear and abrasion resistance compared to traditional nitrile rubber seals
- Superior extrusion resistance prevents nibbling under high-pressure hydraulic spikes
- Sharp sealing lip geometry scrapes away dried mud, ice, and dirt on cylinder rods
- Low friction characteristics prevent stick-slip during slow precision hydraulic movements
Applications
Typical industries
PlasticsOil & GasChemical
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Need this pu seal for your line?
Share your duty conditions and drawings — our team responds with a technical recommendation and a firm quote.