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Polyurethane U-Seal, 2.00 Inch OD, 1.38 Inch ID, 0.31 Inch Height

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Description & Features

Designed for reliability and durability, the Polyurethane U-Seal is an essential component for high-pressure hydraulic applications. Manufactured by Hercules Sealing Products, this U-Seal boasts a beveled lip design that excels in superior film breaking, ideal for maintaining optimal sealing performance. With a 2.00-inch outer diameter, 1.38-inch inner diameter, and a height of 0.31 inches, it fits seamlessly into various hydraulic systems.

Constructed from robust urethane material, this U-Seal operates efficiently within a broad temperature range of -65°F to 220°F, and can withstand pressures up to 6,000 PSI. These attributes make it a versatile choice for demanding environments. Its design ensures the height and cross-section are equal, enhancing its stability and effectiveness in sealing applications.

SKU: U31-1.37-SQB

Supplier Part Number (MPN): U31-1.37-SQB

Alternate Part Numbers: C1DP91

Specifications

Cross Section
0.3125 in
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Pack Size
1.00
UOM
EA
H
0.3125 in
I.D.
1.375 in
O.D.
2 in
Supplier Part Number
U31-1.37-SQB
Alternate Part Numbers
Alternate Part Number C1DP91
Product Weight
0.03 lbs

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0.1875 in

3 in

3.375 in

0.1875 in

Polyurethane U-Seal, 3.38 Inch OD, 3.00 Inch ID, 0.38 Inch Height

U18-3.00-37B Polyurethane U-Seal

0.1875 in

3 in

3.375 in

0.375 in

Polyurethane U-Seal, 3.50 Inch OD, 3.13 Inch ID, 0.38 Inch Height

U18-3.12-37B Polyurethane U-Seal

0.1875 in

3.125 in

3.5 in

0.375 in

Polyurethane U-Seal, 3.50 Inch OD, 3.13 Inch ID, 0.19 Inch Height

U18-3.12-SQB Polyurethane U-Seal

0.1875 in

3.125 in

3.5 in

0.1875 in

Polyurethane U-Seal, 3.88 Inch OD, 3.50 Inch ID, 0.38 Inch Height

U18-3.50-37B Polyurethane U-Seal

0.1875 in

3.5 in

3.875 in

0.375 in

Polyurethane U-Seal, 4.00 Inch OD, 3.63 Inch ID, 0.38 Inch Height

U18-3.62-37B Polyurethane U-Seal

0.1875 in

3.625 in

4 in

0.375 in

Polyurethane U-Seal, 4.00 Inch OD, 3.63 Inch ID, 0.19 Inch Height

U18-3.62-SQB Polyurethane U-Seal

0.1875 in

3.625 in

4 in

0.1875 in

Polyurethane U-Seal, 4.38 Inch OD, 4.00 Inch ID, 0.38 Inch Height

U18-4.00-37B Polyurethane U-Seal

0.1875 in

4 in

4.375 in

0.375 in

Polyurethane U-Seal, 1.25 Inch OD, 0.75 Inch ID, 0.25 Inch Height

U25-0.75 Polyurethane U-Seal

0.25 in

0.75 in

1.25 in

0.25 in

Polyurethane U-Seal, 1.44 Inch OD, 0.81 Inch ID, 0.25 Inch Height

U25-0.93 Polyurethane U-Seal

0.25 in

0.8125 in

1.438 in

0.25 in

Polyurethane U-Seal, 1.50 Inch OD, 1.00 Inch ID, 0.38 Inch Height

U25-1.00-37B Polyurethane U-Seal

0.25 in

1 in

1.5 in

0.375 in

Polyurethane U-Seal, 1.50 Inch OD, 1.00 Inch ID, 0.25 Inch Height

U25-1.00-SQB Polyurethane U-Seal

0.25 in

1 in

1.5 in

0.25 in

Polyurethane U-Seal, 1.63 Inch OD, 1.06 Inch ID, 0.25 Inch Height

U25-1.12 Polyurethane U-Seal

0.25 in

1.0625 in

1.625 in

0.25 in

Polyurethane U-Seal, 1.63 Inch OD, 1.06 Inch ID, 0.38 Inch Height

U25-1.12-37B Polyurethane U-Seal

0.25 in

1.0625 in

1.625 in

0.375 in

Polyurethane U-Seal, 1.69 Inch OD, 0.19 Inch ID, 0.25 Inch Height

U25-1.18 Polyurethane U-Seal

0.25 in

0.188 in

1.688 in

0.25 in

Polyurethane U-Seal, 1.75 Inch OD, 1.25 Inch ID, 0.25 Inch Height

U25-1.25-SQB Polyurethane U-Seal

0.25 in

1.25 in

1.75 in

0.25 in

Polyurethane U-Seal, 1.88 Inch OD, 1.38 Inch ID, 0.25 Inch Height

U25-1.37 Polyurethane U-Seal

0.25 in

1.375 in

1.875 in

0.25 in

Polyurethane U-Seal, 1.88 Inch OD, 1.38 Inch ID, 0.38 Inch Height

U25-1.37-37B Polyurethane U-Seal

0.25 in

1.375 in

1.875 in

0.375 in

Polyurethane U-Seal, 2.00 Inch OD, 1.50 Inch ID, 0.31 Inch Height

U25-1.50-31B Polyurethane U-Seal

0.25 in

1.5 in

2 in

0.3125 in

Polyurethane U-Seal, 2.00 Inch OD, 1.50 Inch ID, 0.25 Inch Height

U25-1.50-SQB Polyurethane U-Seal

0.25 in

1.5 in

2 in

0.25 in

Polyurethane U-Seal, 2.25 Inch OD, 1.75 Inch ID, 0.25 Inch Height

U25-1.75 Polyurethane U-Seal

0.25 in

1.75 in

2.25 in

0.25 in

Polyurethane U-Seal, 2.25 Inch OD, 1.75 Inch ID, 0.38 Inch Height

U25-1.75-37B Polyurethane U-Seal

0.25 in

1.75 in

2.25 in

0.375 in

Polyurethane U-Seal, 2.38 Inch OD, 1.88 Inch ID, 0.38 Inch Height

U25-1.87-37B Polyurethane U-Seal

0.25 in

1.875 in

2.375 in

0.375 in

Polyurethane U-Seal, 2.50 Inch OD, 2.00 Inch ID, 0.31 Inch Height

U25-2.00-31B Polyurethane U-Seal

0.25 in

2 in

2.5 in

0.3125 in

Polyurethane U-Seal, 2.50 Inch OD, 2.00 Inch ID, 0.25 Inch Height

U25-2.00-SQB Polyurethane U-Seal

0.25 in

2 in

2.5 in

0.25 in

Polyurethane U-Seal, 2.63 Inch OD, 2.13 Inch ID, 0.38 Inch Height

U25-2.12-37B Polyurethane U-Seal

0.25 in

2.125 in

2.625 in

0.375 in

Polyurethane U-Seal, 2.75 Inch OD, 2.25 Inch ID, 0.25 Inch Height

U25-2.25 Polyurethane U-Seal

0.25 in

2.25 in

2.75 in

0.25 in

Polyurethane U-Seal, 2.75 Inch OD, 2.25 Inch ID, 0.38 Inch Height

U25-2.25-37B Polyurethane U-Seal

0.25 in

2.25 in

2.75 in

0.375 in

Polyurethane U-Seal, 2.88 Inch OD, 2.38 Inch ID, 0.38 Inch Height

U25-2.37-37B Polyurethane U-Seal

0.25 in

2.375 in

2.875 in

0.375 in

Polyurethane U-Seal, 3.00 Inch OD, 2.50 Inch ID, 0.25 Inch Height

U25-2.50-SQB Polyurethane U-Seal

0.25 in

2.5 in

3 in

0.25 in

Polyurethane U-Seal, 3.13 Inch OD, 2.63 Inch ID, 0.38 Inch Height

U25-2.62-37B Polyurethane U-Seal

0.25 in

2.625 in

3.125 in

0.375 in

Polyurethane U-Seal, 3.25 Inch OD, 2.75 Inch ID, 0.38 Inch Height

U25-2.75-37B Polyurethane U-Seal

0.25 in

2.75 in

3.25 in

0.375 in

Polyurethane U-Seal, 3.25 Inch OD, 2.75 Inch ID, 0.25 Inch Height

U25-2.75-SQB Polyurethane U-Seal

0.25 in

2.75 in

3.25 in

0.25 in

Polyurethane U-Seal, 3.75 Inch OD, 3.25 Inch ID, 0.38 Inch Height

U25-3.25-37B Polyurethane U-Seal

0.25 in

3.25 in

3.75 in

0.375 in

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

U25-3.50 Polyurethane U-Seal

0.25 in

3.5 in

4 in

0.25 in

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

U25-3.50-SQB Polyurethane U-Seal

0.25 in

3.5 in

4 in

0.25 in

Polyurethane U-Seal, 4.25 Inch OD, 3.75 Inch ID, 0.38 Inch Height

U25-3.75-37B Polyurethane U-Seal

0.25 in

3.75 in

4.25 in

0.375 in

Polyurethane U-Seal, 4.25 Inch OD, 3.75 Inch ID, 0.25 Inch Height

U25-3.75-SQB Polyurethane U-Seal

0.25 in

3.75 in

4.25 in

0.25 in

Polyurethane U-Seal, 4.50 Inch OD, 4.00 Inch ID, 0.38 Inch Height

U25-4.00-37B Polyurethane U-Seal

0.25 in

4 in

4.5 in

0.375 in

Polyurethane U-Seal, 4.50 Inch OD, 4.00 Inch ID, 0.50 Inch Height

U25-4.00-50D Polyurethane U-Seal

0.25 in

4 in

4.5 in

0.5 in

Polyurethane U-Seal, 4.50 Inch OD, 4.00 Inch ID, 0.56 Inch Height

U25-4.00-56B Polyurethane U-Seal

0.25 in

4 in

4.5 in

0.5625 in

Polyurethane U-Seal, 5.00 Inch OD, 4.50 Inch ID, 0.38 Inch Height

U25-4.50-37B Polyurethane U-Seal

0.25 in

4.5 in

5 in

0.375 in

Polyurethane U-Seal, 5.00 Inch OD, 4.50 Inch ID, 0.56 Inch Height

U25-4.50-56B Polyurethane U-Seal

0.25 in

4.5 in

5 in

0.5625 in

Polyurethane U-Seal, 5.00 Inch OD, 4.50 Inch ID, 0.63 Inch Height

U25-4.50-62B Polyurethane U-Seal

0.25 in

4.5 in

5 in

0.625 in

Polyurethane U-Seal, 5.50 Inch OD, 5.00 Inch ID, 0.38 Inch Height

U25-5.00-37B Polyurethane U-Seal

0.25 in

5 in

5.5 in

0.375 in

Polyurethane U-Seal, 6.00 Inch OD, 5.50 Inch ID, 0.25 Inch Height

U25-5.50 Polyurethane U-Seal

0.25 in

5.5 in

6 in

0.25 in

Polyurethane U-Seal, 6.00 Inch OD, 5.50 Inch ID, 0.38 Inch Height

U25-5.50-37B Polyurethane U-Seal

0.25 in

5.5 in

6 in

0.375 in

Polyurethane U-Seal, 6.00 Inch OD, 5.50 Inch ID, 0.56 Inch Height

U25-5.50-56B Polyurethane U-Seal

0.25 in

5.5 in

6 in

0.5625 in

Polyurethane U-Seal, 1.63 Inch OD, 1.00 Inch ID, 0.50 Inch Height

U31-1.00-50B Polyurethane U-Seal

0.3125 in

1 in

1.625 in

0.5 in

Polyurethane U-Seal, 1.88 Inch OD, 1.25 Inch ID, 0.31 Inch Height

U31-1.25 Polyurethane U-Seal

0.3125 in

1.25 in

1.875 in

0.3125 in

Polyurethane U-Seal, 1.88 Inch OD, 1.25 Inch ID, 0.38 Inch Height

U31-1.25-37B Polyurethane U-Seal

0.3125 in

1.25 in

1.875 in

0.375 in

Polyurethane U-Seal, 2.00 Inch OD, 1.38 Inch ID, 0.38 Inch Height

U31-1.37-37B Polyurethane U-Seal

0.3125 in

1.375 in

2 in

0.375 in

Polyurethane U-Seal, 2.13 Inch OD, 1.50 Inch ID, 0.31 Inch Height

U31-1.50 Polyurethane U-Seal

0.3125 in

1.5 in

2.125 in

0.3125 in

Polyurethane U-Seal, 2.38 Inch OD, 1.75 Inch ID, 0.38 Inch Height

U31-1.75-37B Polyurethane U-Seal

0.3125 in

1.75 in

2.375 in

0.375 in

Polyurethane U-Seal, 2.50 Inch OD, 1.88 Inch ID, 0.31 Inch Height

U31-1.87 Polyurethane U-Seal

0.3125 in

1.875 in

2.5 in

0.3125 in

Polyurethane U-Seal, 2.63 Inch OD, 2.00 Inch ID, 0.31 Inch Height

U31-2.00 Polyurethane U-Seal

0.3125 in

2 in

2.625 in

0.3125 in

Polyurethane U-Seal, 2.63 Inch OD, 2.00 Inch ID, 0.50 Inch Height

U31-2.00-50B Polyurethane U-Seal

0.3125 in

2 in

2.625 in

0.5 in

Polyurethane U-Seal, 2.88 Inch OD, 2.25 Inch ID, 0.50 Inch Height

U31-2.25-50B Polyurethane U-Seal

0.3125 in

2.25 in

2.875 in

0.5 in

Polyurethane U-Seal, 3.00 Inch OD, 2.38 Inch ID, 0.31 Inch Height

U31-2.37 Polyurethane U-Seal

0.3125 in

2.375 in

3 in

0.3125 in

Polyurethane U-Seal, 3.13 Inch OD, 2.50 Inch ID, 0.31 Inch Height

U31-2.50 Polyurethane U-Seal

0.3125 in

2.5 in

3.125 in

0.3125 in

Polyurethane U-Seal, 3.13 Inch OD, 2.50 Inch ID, 0.50 Inch Height

U31-2.50-50B Polyurethane U-Seal

0.3125 in

2.5 in

3.125 in

0.5 in

Polyurethane U-Seal, 3.38 Inch OD, 2.75 Inch ID, 0.31 Inch Height

U31-2.75 Polyurethane U-Seal

0.3125 in

2.75 in

3.375 in

0.3125 in

Polyurethane U-Seal, 3.38 Inch OD, 2.75 Inch ID, 0.50 Inch Height

U31-2.75-50B Polyurethane U-Seal

0.3125 in

2.75 in

3.375 in

0.5 in

Polyurethane U-Seal, 3.50 Inch OD, 2.88 Inch ID, 0.31 Inch Height

U31-2.87 Polyurethane U-Seal

0.3125 in

2.875 in

3.5 in

0.3125 in

Polyurethane U-Seal, 3.63 Inch OD, 3.00 Inch ID, 0.50 Inch Height

U31-3.00-50B Polyurethane U-Seal

0.3125 in

3 in

3.625 in

0.5 in

Polyurethane U-Seal, 4.00 Inch OD, 3.38 Inch ID, 0.50 Inch Height

U31-3.37-50B Polyurethane U-Seal

0.3125 in

3.375 in

4 in

0.5 in

Polyurethane U-Seal, 4.63 Inch OD, 4.00 Inch ID, 0.31 Inch Height

U31-4.00 Polyurethane U-Seal

0.3125 in

4 in

4.625 in

0.3125 in

Polyurethane U-Seal, 4.63 Inch OD, 4.00 Inch ID, 0.56 Inch Height

U31-4.00-56B Polyurethane U-Seal

0.3125 in

4 in

4.625 in

0.5625 in

Polyurethane U-Seal, 5.00 Inch OD, 4.38 Inch ID, 0.31 Inch Height

U31-4.37 Polyurethane U-Seal

0.3125 in

4.375 in

5 in

0.3125 in

Polyurethane U-Seal, 5.13 Inch OD, 4.50 Inch ID, 0.31 Inch Height

U31-4.50 Polyurethane U-Seal

0.3125 in

4.5 in

5.125 in

0.3125 in

Polyurethane U-Seal, 2.00 Inch OD, 1.25 Inch ID, 0.38 Inch Height

U37-1.25 Polyurethane U-Seal

0.375 in

1.25 in

2 in

0.375 in

Polyurethane U-Seal, 2.50 Inch OD, 1.75 Inch ID, 0.38 Inch Height

U37-1.75 Polyurethane U-Seal

0.375 in

1.75 in

2.5 in

0.375 in

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

U37-2.50-50B Polyurethane U-Seal

0.375 in

2.5 in

3.25 in

0.5 in

Polyurethane U-Seal, 3.50 Inch OD, 2.75 Inch ID, 0.38 Inch Height

U37-2.75 Polyurethane U-Seal

0.375 in

2.75 in

3.5 in

0.375 in

Polyurethane U-Seal, 4.00 Inch OD, 3.25 Inch ID, 0.50 Inch Height

U37-3.25-50B Polyurethane U-Seal

0.375 in

3.25 in

4 in

0.5 in

Polyurethane U-Seal, 4.25 Inch OD, 3.50 Inch ID, 0.38 Inch Height

U37-3.50 Polyurethane U-Seal

0.375 in

3.5 in

4.25 in

0.375 in

Polyurethane U-Seal, 4.50 Inch OD, 3.75 Inch ID, 0.50 Inch Height

U37-3.75-50D Polyurethane U-Seal

0.375 in

3.75 in

4.5 in

0.5 in

Polyurethane U-Seal, 4.75 Inch OD, 4.00 Inch ID, 0.63 Inch Height

U37-4.00-62B Polyurethane U-Seal

0.375 in

4 in

4.75 in

0.625 in

Polyurethane U-Seal, 5.00 Inch OD, 4.25 Inch ID, 0.50 Inch Height

U37-4.25-50D Polyurethane U-Seal

0.375 in

4.25 in

5 in

0.5 in

Polyurethane U-Seal, 5.00 Inch OD, 4.25 Inch ID, 0.63 Inch Height

U37-4.25-62B Polyurethane U-Seal

0.375 in

4.25 in

5 in

0.625 in

Polyurethane U-Seal, 5.00 Inch OD, 4.25 Inch ID, 0.38 Inch Height

U37-4.25-SQB Polyurethane U-Seal

0.375 in

4.25 in

5 in

0.375 in

Polyurethane U-Seal, 5.25 Inch OD, 4.50 Inch ID, 0.63 Inch Height

U37-4.50-62B Polyurethane U-Seal

0.375 in

4.5 in

5.25 in

0.625 in

Polyurethane U-Seal, 5.75 Inch OD, 5.00 Inch ID, 0.63 Inch Height

U37-5.00-62B Polyurethane U-Seal

0.375 in

5 in

5.75 in

0.625 in

Polyurethane U-Seal, 6.00 Inch OD, 5.25 Inch ID, 0.38 Inch Height

U37-5.25 Polyurethane U-Seal

0.375 in

5.25 in

6 in

0.375 in

Polyurethane U-Seal, 6.00 Inch OD, 5.25 Inch ID, 0.50 Inch Height

U37-5.25-50D Polyurethane U-Seal

0.375 in

5.25 in

6 in

0.5 in

Polyurethane U-Seal, 7.00 Inch OD, 6.25 Inch ID, 0.50 Inch Height

U37-6.25-50D Polyurethane U-Seal

0.375 in

6.25 in

7 in

0.5 in

Polyurethane U-Seal, 3.00 Inch OD, 2.00 Inch ID, 0.50 Inch Height

U50-2.00-SQB Polyurethane U-Seal

0.5 in

2 in

3 in

0.5 in

Polyurethane U-Seal, 3.50 Inch OD, 2.50 Inch ID, 0.50 Inch Height

U50-2.50 Polyurethane U-Seal

0.5 in

2.5 in

3.5 in

0.5 in

Product Questions & Answers (2)

Question by: Rick R on Jan 17, 2026, 8:37 AM
trying to replace a worn u-cup seal, are these dimensions 2.00 od, 1.38 id, and 0.31 tall?
Answer by: Customer Support on Jan 19, 2026, 6:14 AM
Match your groove and hardware to the seal size: 2.00 inch OD, 1.375 inch ID, and 0.3125 inch height with a 0.3125 inch cross section.
Question by: Duane B on Feb 6, 2026, 5:06 PM
Reckon this'd be alright for a hydraulic press I got in the shop? Just need somethin' that can take a good bit of pressure.
Answer by: Customer Support on Feb 8, 2026, 4:40 PM
This U-seal is rated to handle pressures up to 6,000 PSI, so it should work well in many hydraulic press applications.

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