Polyurethane U-Seal, 4.00 Inch OD, 3.50 Inch ID, 0.25 Inch Height

Cross Section
0.25 in
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Pack Size
1.00
UOM
EA
H
0.25 in
I.D.
3.5 in
O.D.
4 in
Supplier Part Number
U25-3.50
Alternate Part Numbers
Alternate Part Number C1DP48, Alternate Part Number MI-03110098, Alternate Part Number MINO-00407X12064
Product Weight
0.04 lbs

Product Questions & Answers

Got a cylinder with a 3.50 bore and a 4.00 OD groove, would this seal fit right or am I looking at the wrong size?
Question by: Gene J on Oct 31, 2025, 1:39 PM
Those dimensions line up exactly with what this seal is built for. The 3.50 inch ID seats against the rod or bore surface and the 4.00 inch OD fits the groove, with a 0.25 inch cross section and matching height. That equal height-to-cross-section profile is a standard configuration, so if your groove is cut to match those numbers you should be in good shape.
Answer by: Customer Support on Nov 1, 2025, 3:17 PM
got a cylinder groove that measures 4.00 OD and 3.50 ID, is this u-seal the right size?
Question by: Scott R on Oct 28, 2025, 6:39 PM
It matches a 4.00 inch outside diameter, 3.50 inch inside diameter, and a 0.25 inch height with a 0.25 inch cross section, so it is the standard profile where height and cross section are equal.
Answer by: Customer Support on Oct 30, 2025, 6:22 AM

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