U-Cup

U-Cups (U-Packing or U-Ring) are the most compact and versatile of the many lip type seals available. In its several configurations, it may be utilized as an ID - Rod Seal, or an OD - Piston Seal. U-cups with long thin lips may exhibit very low dynamic friction and can accommodate out-of-round or eccentric components. Shorter, heavy, lips provide a more reliable seal at low pressures and are better suited for sealing at high pressures.

Specs

Pressure [Low, Medium, High],

Dynamic Service Speed [Low, Medium, High],

Seal Directionality [Unidirectional]

Manufacturing Method [Compression, Injection, Compression injection],

Common modifications Asymetrical lips, net molded or knife trimmed lip (symmetrical legacy AN 6226)

Catalog Standards AN, varies by OEM

Customizable Yes

Comparative cost: $$

Special Applications

Lip/rod interface customizable from fully dry to self lubricating, high pressure delta possible, gland OD sizes seal lip to rod

More Information

Sizing standards

Standard hydraulic rod inch and metric sizes with profile and gland dimensions varying by OEM. Consult with Darcoid technical team for the optimal selection for your specific application.

Modifications

Asymmetrical lips for modifying load transfer and dynamic performance. Heel bumps for in groove stability. Shaped heel for integrated anti extrusion devices

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