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Polyurethane U-Seal, 1.88 Inch OD, 1.50 Inch ID, 0.38 Inch Height
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Supplier Part Number
U18-1.50-37B
Alternate Part Numbers
Alternate Part Number
C1DN49 ,
Alternate Part Number
MI-02250004 ,
Alternate Part Number
MINO-00407X31568
trying to match up a u-seal i pulled out of a cylinder, is this one the 1.50 id and 1.88 od size?
Question by: Bobby P on Feb 10, 2026, 11:15 AM
The key dimensions on this U-seal are a 1.50 inch ID, 1.875 inch OD, and 0.375 inch height, with a 0.1875 inch cross section. If your old seal measures out to those numbers, it is the same size.
Answer by: Customer Support on Feb 11, 2026, 6:00 PM
what's the pressure range on this u-seal, and will it hold up in a high-cycle rod application?
Question by: Ross C on Jul 28, 2025, 1:25 PM
Rated from 0 to 6,000 PSI, it covers the full working range you'd find in most hydraulic cylinder and linear actuator setups. The beveled lip design helps break the fluid film consistently across that range, so it stays effective whether you're running low-pressure circuits or pushing closer to the upper limit. Urethane construction gives it solid resistance to both abrasion and extrusion, which matters a lot in reciprocating rod applications where wear tends to creep up on softer seal materials.
Answer by: Customer Support on Jul 30, 2025, 6:01 AM
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