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.
Common modifications
Asymetrical lips,
net molded or knife trimmed lip (symmetrical legacy AN 6226)
Catalog StandardsAN, varies by OEM
CustomizableYes
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
Engagement with Darcoid equals YOUR success
Fluid Power – Mobility Hydraulics
Product Recall! Battle Stations!
The CEO of a market leader in high performance bicycle components was taking personal charge of a multi-million dollar product recall critical to restoring confidence in his brand. The seal and..
Securing your seal supply chain obviously requires robust processes and strong global relationships. But most importantly it takes people who care, coming in every day and getting it done.
The program engineer for a well-known bicycle component manufacturer was contemplating a product recall. A critical seal was exhibiting a high instance of failure Our customer performed a quality..
Though relatively small and rarely seen, a seal has a large impact on product performance and quality. The person running the company has an equal responsibility to see that dependability,..
You need to get your best product designed, validated, specified, ramped and released. We’ve got your back, from concept through zero defect supply programs. It starts with understanding what you need the seal to do. We’re ready to get started.