Polyurethane U-Seal, 3.25 Inch OD, 2.50 Inch ID, 0.50 Inch Height

Cross Section
0.375 in
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Pack Size
1.00
UOM
EA
H
0.5 in
I.D.
2.5 in
O.D.
3.25 in
Supplier Part Number
U37-2.50-50B
Alternate Part Numbers
Alternate Part Number C1DQ51, Alternate Part Number MI-01197941, Alternate Part Number MINO-00407X60332
Product Weight
0.07 lbs

Product Questions & Answers

Got a cylinder with a 2.50 bore and 3.25 OD groove, need a half inch tall seal. this the right fit?
Question by: Larry J on May 6, 2025, 8:59 AM
Those dimensions match up exactly. The seal measures 2.50 inches ID, 3.25 inches OD, and 0.50 inches in height, so a groove cut to those specs will seat this properly. The cross section runs 0.375 inches, and the height is greater than the cross section, which is worth confirming against your groove geometry before install.
Answer by: Customer Support on May 7, 2025, 3:44 PM
trying to match up a u-seal i pulled out, are these dimensions 3.25 od, 2.50 id, and 0.50 tall?
Question by: Steve M on Jul 25, 2025, 1:42 PM
Fit comes down to those three measurements, and this seal is sized 3.25 inch OD, 2.50 inch ID, and 0.50 inch height with a 0.375 inch cross section. It is the profile where the height is greater than the cross section.
Answer by: Customer Support on Jul 27, 2025, 12:17 PM
What kind of pressure can this thing handle?
Question by: Kent C on Feb 16, 2026, 1:44 PM
This U-seal is rated to handle hydraulic applications with pressures ranging from 0 to 6,000 PSI.
Answer by: Customer Support on Feb 17, 2026, 9:11 PM

Similar Products

Model Number Cross Section I.D. O.D. H Price Buy Now
U12-0.62-25B 0.125 in 0.625 in 0.875 in 0.25 in
U12-1.00-25B 0.125 in 1 in 1.25 in 0.25 in
U12-1.25-SQB 0.125 in 1.25 in 1.5 in 0.125 in
U18-1.25-SQB 0.1875 in 1.25 in 1.625 in 0.1875 in
U18-1.75-37B 0.1875 in 1.75 in 2.125 in 0.375 in
U18-2.12-SQB 0.1875 in 2.125 in 2.5 in 0.1875 in
U18-2.50-31B 0.1875 in 2.5 in 2.875 in 0.3125 in
U25-1.25-37B 0.25 in 1.25 in 1.75 in 0.375 in
U25-1.50-37B 0.25 in 1.5 in 2 in 0.375 in
U25-2.00-37B 0.25 in 2 in 2.5 in 0.375 in
U25-2.50-37B 0.25 in 2.5 in 3 in 0.375 in
U25-3.00 0.25 in 3 in 3.5 in 0.25 in
U25-3.00-37B 0.25 in 3 in 3.5 in 0.375 in
U25-3.50-37B 0.25 in 3.5 in 4 in 0.375 in
U25-4.00-SQB 0.25 in 4 in 4.5 in 0.25 in
U25-4.50 0.25 in 4.5 in 5 in 0.25 in
U25-5.00 0.25 in 5 in 5.5 in 0.25 in
U12-0.18-25B 0.125 in 0.1875 in 0.438 in 0.25 in
U12-0.25-25B 0.125 in 0.25 in 0.5 in 0.25 in
U12-0.25-SQB 0.125 in 0.25 in 0.5 in 0.125 in
U12-0.31-25B 0.125 in 0.3125 in 0.563 in 0.25 in
U12-0.31-SQB 0.125 in 0.3125 in 0.563 in 0.125 in
U12-0.37 0.125 in 0.375 in 0.625 in 0.125 in
U12-0.50-25B 0.125 in 0.5 in 0.75 in 0.25 in
U12-0.50-SQB 0.125 in 0.5 in 0.75 in 0.125 in
U12-0.56 0.125 in 0.625 in 0.938 in 0.125 in
U12-0.62-SQB 0.125 in 0.625 in 0.875 in 0.125 in
U12-0.68 0.125 in 0.6875 in 0.938 in 0.125 in
U12-0.75-18B 0.125 in 0.75 in 1 in 0.1875 in
U12-0.75-25B 0.125 in 0.75 in 1 in 0.25 in
U12-0.75-SQB 0.125 in 0.75 in 1 in 0.125 in
U12-0.81 0.125 in 0.8125 in 1.063 in 0.125 in
U12-0.87-25B 0.125 in 0.875 in 1.125 in 0.25 in
U12-0.87-SQB 0.125 in 0.875 in 1.125 in 0.125 in
U12-1.00-18B 0.125 in 1 in 1.25 in 0.1875 in
U12-1.00-SQB 0.125 in 1 in 1.25 in 0.125 in
U12-1.06-SQB 0.125 in 1.0625 in 1.313 in 0.125 in
U12-1.12-25B 0.125 in 1.0625 in 1.375 in 0.25 in
U12-1.12-SQB 0.125 in 1.0625 in 1.375 in 0.125 in
U12-1.18 0.125 in 0.188 in 1.438 in 0.125 in
U12-1.18-18B 0.125 in 0.188 in 1.438 in 0.1875 in
U12-1.18-25B 0.125 in 0.188 in 1.438 in 0.25 in
U12-1.25-18B 0.125 in 1.25 in 1.5 in 0.1875 in
U12-1.25-25B 0.125 in 1.25 in 1.5 in 0.25 in
U12-1.37-25B 0.125 in 1.375 in 1.625 in 0.25 in
U12-1.37-SQB 0.125 in 1.375 in 1.625 in 0.125 in
U12-1.50-25B 0.125 in 1.5 in 1.75 in 0.25 in
U12-1.50-SQB 0.125 in 1.5 in 1.75 in 0.125 in
U12-1.62-SQB 0.125 in 1.625 in 1.875 in 0.125 in
U12-1.75-SQB 0.125 in 1.75 in 2 in 0.125 in
U12-2.00 0.125 in 2 in 2.25 in 0.125 in
U12-2.25 0.125 in 2.25 in 2.5 in 0.125 in
U12-2.75 0.125 in 2.75 in 3 in 0.125 in
U15-1.18 0.1563 in 0.188 in 1.5 in 0.1563 in
U15-1.25 0.1563 in 1.25 in 1.563 in 0.1563 in
U15-1.37 0.1563 in 1.375 in 1.688 in 0.1563 in
U18-0.50 0.1875 in 0.5 in 0.875 in 0.1875 in
U18-0.62-31B 0.1875 in 0.625 in 1 in 0.3125 in
U18-0.62-SQB 0.1875 in 0.625 in 1 in 0.1875 in
U18-0.75-31B 0.1875 in 0.75 in 1.125 in 0.3125 in
U18-0.75-SQB 0.1875 in 0.75 in 1.125 in 0.1875 in
U18-0.87-31B 0.1875 in 0.875 in 1.25 in 0.3125 in
U18-0.87-SQB 0.1875 in 0.875 in 1.25 in 0.1875 in
U18-1.00-25B 0.1875 in 1 in 1.375 in 0.25 in
U18-1.00-31B 0.1875 in 1 in 1.375 in 0.3125 in
U18-1.00-37B 0.1875 in 1 in 1.375 in 0.375 in
U18-1.00-SQB 0.1875 in 1 in 1.375 in 0.1875 in
U18-1.12-25B 0.1875 in 1.0625 in 1.5 in 0.25 in
U18-1.12-31B 0.1875 in 1.0625 in 1.5 in 0.3125 in
U18-1.12-SQB 0.1875 in 1.0625 in 1.5 in 0.1875 in
U18-1.18 0.1875 in 0.188 in 1.563 in 0.1875 in
U18-1.25-25B 0.1875 in 1.25 in 1.625 in 0.25 in
U18-1.25-31B 0.1875 in 1.25 in 1.625 in 0.3125 in
U18-1.25-37B 0.1875 in 1.25 in 1.625 in 0.375 in
U18-1.37-25B 0.1875 in 1.375 in 1.75 in 0.25 in
U18-1.37-31B 0.1875 in 1.375 in 1.75 in 0.3125 in
U18-1.37-37B 0.1875 in 1.375 in 1.75 in 0.375 in
U18-1.37-SQB 0.1875 in 1.375 in 1.75 in 0.1875 in
U18-1.50-25B 0.1875 in 1.5 in 1.875 in 0.25 in
U18-1.50-31B 0.1875 in 1.5 in 1.875 in 0.3125 in
U18-1.50-37B 0.1875 in 1.5 in 1.875 in 0.375 in
U18-1.50-SQB 0.1875 in 1.5 in 1.875 in 0.1875 in
U18-1.62 0.1875 in 1.625 in 2 in 0.1875 in
U18-1.62-25B 0.1875 in 1.625 in 2 in 0.25 in
U18-1.62-31B 0.1875 in 1.625 in 2 in 0.3125 in
U18-1.62-37B 0.1875 in 1.625 in 2 in 0.375 in
U18-1.62-SQB 0.1875 in 1.625 in 2 in 0.1875 in
U18-1.75-25B 0.1875 in 1.75 in 2.125 in 0.25 in
U18-1.75-31B 0.1875 in 1.75 in 2.125 in 0.3125 in
U18-1.75-SQB 0.1875 in 1.75 in 2.125 in 0.1875 in
U18-1.87-37B 0.1875 in 1.875 in 2.25 in 0.375 in
U18-1.87-SQB 0.1875 in 1.875 in 2.25 in 0.1875 in
U18-2.00-31B 0.1875 in 2 in 2.375 in 0.3125 in
U18-2.00-37B 0.1875 in 2 in 2.375 in 0.375 in
U18-2.00-SQB 0.1875 in 2 in 2.375 in 0.1875 in
U18-2.12-25B 0.1875 in 2.125 in 2.5 in 0.25 in
U18-2.25-37B 0.1875 in 2.25 in 2.625 in 0.375 in
U18-2.25-SQB 0.1875 in 2.25 in 2.625 in 0.1875 in
U18-2.37-SQB 0.1875 in 2.375 in 2.75 in 0.1875 in
U18-2.50-25B 0.1875 in 2.5 in 2.875 in 0.25 in
U18-2.50-37B 0.1875 in 2.5 in 2.875 in 0.375 in
U18-2.50-SQB 0.1875 in 2.5 in 2.875 in 0.1875 in
U18-2.62-37B 0.1875 in 2.625 in 3 in 0.375 in
U18-2.62-SQB 0.1875 in 2.625 in 3 in 0.1875 in
U18-2.75-37B 0.1875 in 2.75 in 3.125 in 0.375 in
U18-2.75-SQB 0.1875 in 2.75 in 3.125 in 0.1875 in
U18-2.87 0.1875 in 2.875 in 3.25 in 0.1875 in
U18-3.00 0.1875 in 3 in 3.375 in 0.1875 in
U18-3.00-37B 0.1875 in 3 in 3.375 in 0.375 in
U18-3.12-37B 0.1875 in 3.125 in 3.5 in 0.375 in
U18-3.12-SQB 0.1875 in 3.125 in 3.5 in 0.1875 in
U18-3.50-37B 0.1875 in 3.5 in 3.875 in 0.375 in
U18-3.62-37B 0.1875 in 3.625 in 4 in 0.375 in
U18-3.62-SQB 0.1875 in 3.625 in 4 in 0.1875 in
U18-4.00-37B 0.1875 in 4 in 4.375 in 0.375 in
U25-0.75 0.25 in 0.75 in 1.25 in 0.25 in
U25-0.93 0.25 in 0.8125 in 1.438 in 0.25 in
U25-1.00-37B 0.25 in 1 in 1.5 in 0.375 in
U25-1.00-SQB 0.25 in 1 in 1.5 in 0.25 in
U25-1.12 0.25 in 1.0625 in 1.625 in 0.25 in
U25-1.12-37B 0.25 in 1.0625 in 1.625 in 0.375 in
U25-1.18 0.25 in 0.188 in 1.688 in 0.25 in
U25-1.25-SQB 0.25 in 1.25 in 1.75 in 0.25 in
U25-1.37 0.25 in 1.375 in 1.875 in 0.25 in
U25-1.37-37B 0.25 in 1.375 in 1.875 in 0.375 in
U25-1.50-31B 0.25 in 1.5 in 2 in 0.3125 in
U25-1.50-SQB 0.25 in 1.5 in 2 in 0.25 in
U25-1.75 0.25 in 1.75 in 2.25 in 0.25 in
U25-1.75-37B 0.25 in 1.75 in 2.25 in 0.375 in
U25-1.87-37B 0.25 in 1.875 in 2.375 in 0.375 in
U25-2.00-31B 0.25 in 2 in 2.5 in 0.3125 in
U25-2.00-SQB 0.25 in 2 in 2.5 in 0.25 in
U25-2.12-37B 0.25 in 2.125 in 2.625 in 0.375 in
U25-2.25 0.25 in 2.25 in 2.75 in 0.25 in
U25-2.25-37B 0.25 in 2.25 in 2.75 in 0.375 in
U25-2.37-37B 0.25 in 2.375 in 2.875 in 0.375 in
U25-2.50-SQB 0.25 in 2.5 in 3 in 0.25 in
U25-2.62-37B 0.25 in 2.625 in 3.125 in 0.375 in
U25-2.75-37B 0.25 in 2.75 in 3.25 in 0.375 in
U25-2.75-SQB 0.25 in 2.75 in 3.25 in 0.25 in
U25-3.25-37B 0.25 in 3.25 in 3.75 in 0.375 in
U25-3.50 0.25 in 3.5 in 4 in 0.25 in
U25-3.50-SQB 0.25 in 3.5 in 4 in 0.25 in
U25-3.75-37B 0.25 in 3.75 in 4.25 in 0.375 in
U25-3.75-SQB 0.25 in 3.75 in 4.25 in 0.25 in
U25-4.00-37B 0.25 in 4 in 4.5 in 0.375 in
U25-4.00-50D 0.25 in 4 in 4.5 in 0.5 in
U25-4.00-56B 0.25 in 4 in 4.5 in 0.5625 in
U25-4.50-37B 0.25 in 4.5 in 5 in 0.375 in
U25-4.50-56B 0.25 in 4.5 in 5 in 0.5625 in
U25-4.50-62B 0.25 in 4.5 in 5 in 0.625 in
U25-5.00-37B 0.25 in 5 in 5.5 in 0.375 in
U25-5.50 0.25 in 5.5 in 6 in 0.25 in
U25-5.50-37B 0.25 in 5.5 in 6 in 0.375 in
U25-5.50-56B 0.25 in 5.5 in 6 in 0.5625 in
U31-1.00-50B 0.3125 in 1 in 1.625 in 0.5 in
U31-1.25 0.3125 in 1.25 in 1.875 in 0.3125 in
U31-1.25-37B 0.3125 in 1.25 in 1.875 in 0.375 in
U31-1.37-37B 0.3125 in 1.375 in 2 in 0.375 in
U31-1.37-SQB 0.3125 in 1.375 in 2 in 0.3125 in
U31-1.50 0.3125 in 1.5 in 2.125 in 0.3125 in
U31-1.75-37B 0.3125 in 1.75 in 2.375 in 0.375 in
U31-1.87 0.3125 in 1.875 in 2.5 in 0.3125 in
U31-2.00 0.3125 in 2 in 2.625 in 0.3125 in
U31-2.00-50B 0.3125 in 2 in 2.625 in 0.5 in
U31-2.25-50B 0.3125 in 2.25 in 2.875 in 0.5 in
U31-2.37 0.3125 in 2.375 in 3 in 0.3125 in
U31-2.50 0.3125 in 2.5 in 3.125 in 0.3125 in
U31-2.50-50B 0.3125 in 2.5 in 3.125 in 0.5 in
U31-2.75 0.3125 in 2.75 in 3.375 in 0.3125 in
U31-2.75-50B 0.3125 in 2.75 in 3.375 in 0.5 in
U31-2.87 0.3125 in 2.875 in 3.5 in 0.3125 in
U31-3.00-50B 0.3125 in 3 in 3.625 in 0.5 in
U31-3.37-50B 0.3125 in 3.375 in 4 in 0.5 in
U31-4.00 0.3125 in 4 in 4.625 in 0.3125 in
U31-4.00-56B 0.3125 in 4 in 4.625 in 0.5625 in
U31-4.37 0.3125 in 4.375 in 5 in 0.3125 in
U31-4.50 0.3125 in 4.5 in 5.125 in 0.3125 in
U37-1.25 0.375 in 1.25 in 2 in 0.375 in
U37-1.75 0.375 in 1.75 in 2.5 in 0.375 in
U37-2.50-50B 0.375 in 2.5 in 3.25 in 0.5 in
U37-2.75 0.375 in 2.75 in 3.5 in 0.375 in
U37-3.25-50B 0.375 in 3.25 in 4 in 0.5 in
U37-3.50 0.375 in 3.5 in 4.25 in 0.375 in
U37-3.75-50D 0.375 in 3.75 in 4.5 in 0.5 in
U37-4.00-62B 0.375 in 4 in 4.75 in 0.625 in
U37-4.25-50D 0.375 in 4.25 in 5 in 0.5 in
U37-4.25-62B 0.375 in 4.25 in 5 in 0.625 in
U37-4.25-SQB 0.375 in 4.25 in 5 in 0.375 in
U37-4.50-62B 0.375 in 4.5 in 5.25 in 0.625 in
U37-5.00-62B 0.375 in 5 in 5.75 in 0.625 in
U37-5.25 0.375 in 5.25 in 6 in 0.375 in
U37-5.25-50D 0.375 in 5.25 in 6 in 0.5 in
U37-6.25-50D 0.375 in 6.25 in 7 in 0.5 in
U50-2.00-SQB 0.5 in 2 in 3 in 0.5 in
U50-2.50 0.5 in 2.5 in 3.5 in 0.5 in