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Polyurethane U-Seal, 2.13 Inch OD, 1.75 Inch ID, 0.19 Inch Height
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Supplier Part Number
U18-1.75-SQB
Alternate Part Numbers
Alternate Part Number
C1DN58 ,
Alternate Part Number
MI-01811095 ,
Alternate Part Number
MINO-00407Q30865
what's the pressure rating on this seal? got a cylinder running pretty hard and need something that won't give out on me
Question by: Rex B on Jun 2, 2025, 1:55 PM
Rated from 0 up to 6,000 PSI, so it covers most heavy-duty hydraulic cylinder work without issue. The polyurethane construction holds up well under sustained pressure, and the beveled lip design helps maintain consistent film breaking across that whole range. For reciprocating rod and piston service especially, it's a solid fit.
Answer by: Customer Support on Jun 3, 2025, 9:40 PM
trying to match up a u-seal i pulled out of a cylinder. if my measurements are 1.75 id, 2.125 od, and right around 3/16 tall, is this the same one?
Question by: Lynn L on Aug 24, 2025, 2:04 PM
Match the dimensions and profile and it lines up. This U-seal is 1.75 inch ID, 2.125 inch OD, with a 0.1875 inch height and cross section, and it follows the SQB style where height and cross section are equal.
Answer by: Customer Support on Aug 25, 2025, 8:13 PM
What's the deal with that beveled lip? Does it really make a difference?
Question by: Travis S on Jan 15, 2026, 5:11 PM
That beveled lip design is there to help break the fluid film, which improves the seal's performance across different hydraulic jobs.
Answer by: Customer Support on Jan 17, 2026, 6:47 AM
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