Symmetrical single-acting hydraulic seals, commonly referred to as U-cup seals, lip seals, or wipers, are designed for dynamic sealing applications in hydraulic systems. Due to their symmetrical lip geometry, they can be installed either as rod seals or piston seals, making them highly versatile in maintenance and repair contexts.
The identical shape and dimensions of the sealing lips on both sides allow for bidirectional installation, simplifying inventory and reducing the number of seal variants required.
These seals are typically manufactured from polyurethane (PU) for increased wear resistance, or nitrile rubber (NBR) for good flexibility and fluid compatibility.
Key Characteristics:
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Suitable for both piston and rod applications
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Made from PU or NBR, depending on performance requirements
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Compatible with closed groove designs
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Simple groove geometry for ease of installation
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Cost-effective solution for service and replacement
A wide range of standard sizes is available. Detailed performance specifications and installation guidelines can be found in the individual product descriptions.
![Rod-Piston seal MA25-76,2x88,9x9,52 PU [K21]](https://lemming.shop/image/cache/wp/gj/webcam/Rod-Piston-seal-MA25-76,2x88,9x9,52-PU-[K21]-1-38x38.webp "Rod-Piston seal MA25-76,2x88,9x9,52 PU [K21]"){kind=small}
