Manufactured by Hercules Sealing Products, this urethane backup ring features a 90A durometer, offering robust support in hydraulic systems. Designed to enhance sealing efficiency, it prevents extrusion in high-pressure environments, ensuring reliable and long-lasting performance. The urethane material provides excellent wear resistance and durability, making it ideal for demanding industrial applications.
It is compatible with a range of hydraulic assemblies, adding versatility to its use. Whether in construction machinery, agricultural equipment, or other industrial sectors, this backup ring excels in maintaining seal integrity under rigorous conditions.
SKU: 575-448
Supplier Part Number (MPN): 575-448
Alternate Part Numbers: C1BV83, MI-02565017, MINO-00407X50013
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Specifications
Alternate Part Numbers
Alternate Part NumberC1BV83, Alternate Part Number MI-02565017, Alternate Part Number MINO-00407X50013
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Pack Size
1.00
UOM
EA
Supplier Part Number
575-448
Product Weight
0.03 lbs
Product Questions & Answers (2)
Question by: Rod M on May 17, 2025, 6:46 PM
what exactly is a backup ring used for in a hydraulic setup, and does the urethane material hold up better than rubber ones I've used before?
Answer by: Customer Support on May 19, 2025, 8:06 AM
Backup rings sit behind a primary seal to stop it from extruding into the clearance gap under pressure. Urethane at 90A durometer is noticeably firmer than standard rubber, which means it resists that gap extrusion better in higher-pressure situations. Hercules Sealing Products has a solid reputation for dimensional consistency on these, so you're getting a reliable part from a well-regarded sealing manufacturer.
Question by: Shane H on Jul 12, 2025, 7:43 PM
What exactly is this ring made of? I'm seeing "urethane" but is there anything else?
Answer by: Customer Support on Jul 13, 2025, 9:48 PM
It's a 90A durometer urethane, nothing else to it. Solid construction.
