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Polyurethane U-Seal, 3.13 Inch OD, 2.75 Inch ID, 0.38 Inch Height
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Supplier Part Number
U18-2.75-37B
Alternate Part Numbers
Alternate Part Number
C1DN76 ,
Alternate Part Number
MI-02605078 ,
Alternate Part Number
MINO-00407X50125
Does this seal hold up at both real cold temps and higher heat? Got equipment that sees a pretty wide swing depending on the season and what we're runnin through it.
Question by: Danny H on Mar 16, 2026, 10:27 AM
Rated from -65°F all the way up to 220°F, so it covers a wide thermal range without issue. Whether you're dealing with cold startups in the dead of winter or equipment that runs hot under load, this seal is built to stay functional across that full spread. Urethane handles temperature swings better than a lot of other seal materials, so you're not going to see it crack or soften out on the extremes of that range.
Answer by: Customer Support on Mar 17, 2026, 11:02 AM
Reckon this'll hold up in a hydraulic system pushing close to 6000 PSI? Don't wanna have to replace it anytime soon.
Question by: Rex W on Apr 6, 2025, 7:59 AM
Rated to handle pressures up to 6,000 PSI, this U-seal should be just what you need for those robust hydraulic jobs.
Answer by: Customer Support on Apr 8, 2025, 7:22 AM
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