3/16" Cross Section

Nitrile U-Cup Seals, also known as HRU Homogeneous U-Cups or block vee seals, are designed for reliable performance in low-pressure pneumatic and hydraulic systems. These compact, single-material seals offer a dependable upgrade or direct replacement for AS568 O-Rings, especially in rod and piston applications where space is limited and sealing performance is critical. Made from 70 durometer Nitrile (Buna-N), they resist oils, fuels, and hydraulic fluids while delivering consistent sealing under pressures up to 500 PSI. Ideal for industrial cylinders, automation systems, and maintenance operations, HRU U-Cups provide cost-effective, long-lasting performance trusted by OEMs and field techs alike.

Operating temperature: -40° to +212°F (-40° to +100°C)

Displaying 1 to 22 (of 22 Products)
Product Image Model Product Name Qty. Price Quantity Discounts
(image for) HRU18-0.75-18 HRU Style Multi-Lip Rod U-Seal - 3/4" ID x 1-1/8" OD HRU18-0.75-18

HRU18-0.75-18 HRU Style Multi-Lip Rod U-Seal - 3/4" ID x 1-1/8" OD

3/4" ID X 1-1/8" OD X 3/16" HT HRU Style Multi-Lip Rod U-Seal - 3/4" ID x 1-1/8" OD Item 666-314 Same Sizing as AS568-314 The HRU Style Multi-Lip Rod U-Seal is engineered for superior sealing performance in hydraulic applications, combining the pressure-compensating, uni-directional benefits of a...
 In Stock: 2
$2.900
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Quantity Discounts
1-9$2.900
10-99$2.320
100+$2.030
(image for) HRU18-1.00-18 Homogeneous U-Seals HRU18-1.00-18

HRU18-1.00-18 Homogeneous U-Seals

1" ID X 1-3/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston seal....
 In Stock: 385
$3.040
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Quantity Discounts
1-9$3.040
10-99$2.440
100+$2.130
(image for) HRU18-1.25-18 Homogeneous U-Seals HRU18-1.25-18

HRU18-1.25-18 Homogeneous U-Seals

1-1/4" ID X 1-5/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 171
$1.540
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Quantity Discounts
1-9$1.540
10-99$1.240
100+$1.080
(image for) HRU18-1.37-18 Homogeneous U-Seals HRU18-1.37-18

HRU18-1.37-18 Homogeneous U-Seals

1-3/8" ID X 1-3/4" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 0
$3.360
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Quantity Discounts
1-9$3.360
10-99$2.690
100+$2.360
(image for) HRU18-1.37-18V Homogeneous U-Seals HRU18-1.37-18V

HRU18-1.37-18V Homogeneous U-Seals

1-3/8" ID X 1-3/4" OD X 3/16" HT Fluorocarbon FKM Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a...
 In Stock: 0
$30.120
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Quantity Discounts
1-9$30.120
10-99$24.100
100+$21.090
(image for) HRU18-1.50-18 Homogeneous U-Seals HRU18-1.50-18

HRU18-1.50-18 Homogeneous U-Seals

1-1/2" ID X 1-7/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 16
$3.360
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Quantity Discounts
1-9$3.360
10-99$2.690
100+$2.360
(image for) HRU18-1.62-18 Homogeneous U-Seals HRU18-1.62-18

HRU18-1.62-18 Homogeneous U-Seals

1-5/8" ID X 2" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston seal....
 In Stock: 12
$3.540
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Quantity Discounts
1-14$3.540
15-99$2.390
100+$1.850
(image for) HRU18-1.62-18V Homogeneous U-Seals HRU18-1.62-18V

HRU18-1.62-18V Homogeneous U-Seals

1-5/8" ID X 2" OD X 3/16" HT Fluorocarbon FKM Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod...
 In Stock: 0
$23.700
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Quantity Discounts
1-9$23.700
10-99$18.960
100+$16.590
(image for) HRU18-1.75-18 Homogeneous U-Seals HRU18-1.75-18

HRU18-1.75-18 Homogeneous U-Seals

1-3/4" ID X 2-1/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 90
$3.540
Add:
Quantity Discounts
1-9$3.540
10-99$1.420
100+$1.240
(image for) HRU18-1.75-18V Homogeneous U-Seals HRU18-1.75-18V

HRU18-1.75-18V Homogeneous U-Seals

1-3/4" ID X 2-1/8" ID X 3/16" OD Fluorocarbon FKM Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a...
 In Stock: 0
$24.700
Add:
Quantity Discounts
1-9$24.700
10-99$19.760
100+$17.290
(image for) HRU18-1.87-18 Homogeneous U-Seals HRU18-1.87-18

HRU18-1.87-18 Homogeneous U-Seals

1-7/8" ID X 2-1/4" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 82
$3.540
Add:
Quantity Discounts
1-11$3.540
12-99$2.600
100+$2.060
(image for) HRU18-2.00-18 Homogeneous U-Seals HRU18-2.00-18

HRU18-2.00-18 Homogeneous U-Seals

2" ID X 2-3/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston seal....
 In Stock: 95
$3.810
Add:
Quantity Discounts
1-9$3.810
10-99$3.050
100+$2.670
(image for) HRU18-2.00-18V Homogeneous U-Seals HRU18-2.00-18V

HRU18-2.00-18V Homogeneous U-Seals

2" ID X 2-3/8" OD X 3/16" HT Fluorocarbon FKM Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod...
 In Stock: 0
$25.320
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Quantity Discounts
1-9$25.320
10-99$20.260
100+$17.730
(image for) HRU18-2.12-18 Homogeneous U-Seals HRU18-2.12-18

HRU18-2.12-18 Homogeneous U-Seals

2-1/8" ID X 2-1/2" ID X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 34
$3.810
Add:
Quantity Discounts
1-9$3.810
10-99$3.050
100+$2.670
(image for) HRU18-2.12-18V Homogeneous U-Seals HRU18-2.12-18V

HRU18-2.12-18V Homogeneous U-Seals

2-1/8" ID X 2-1/2" OD X 3/16" HT Fluorocarbon FKM Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a...
 In Stock: 0
$25.320
Add:
Quantity Discounts
1-9$25.320
10-99$20.260
100+$17.730
(image for) HRU18-2.25-18 Homogeneous U-Seals HRU18-2.25-18

HRU18-2.25-18 Homogeneous U-Seals

2-1/4" ID X 2-5/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 20
$2.180
Add:
Quantity Discounts
1-9$2.180
10-99$1.750
100+$1.530
(image for) HRU18-2.37-18 Homogeneous U-Seals HRU18-2.37-18

HRU18-2.37-18 Homogeneous U-Seals

2-3/8" ID X 2-3/4" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 91
$3.810
Add:
Quantity Discounts
1-9$3.810
10-99$3.050
100+$2.670
(image for) HRU18-2.50-18 Homogeneous U-Seals HRU18-2.50-18

HRU18-2.50-18 Homogeneous U-Seals

2-1/2" ID X 2-5/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 0
$5.400
Add:
Quantity Discounts
1-9$5.400
10-99$4.320
100+$3.780
(image for) HRU18-2.87-18 Homogeneous U-Seals HRU18-2.87-18

HRU18-2.87-18 Homogeneous U-Seals

2-7/8" ID X 3-1/4" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 0
$5.050
Add:
Quantity Discounts
1-9$5.050
10-99$4.040
100+$3.540
(image for) HRU18-3.00-18 Homogeneous U-Seals HRU18-3.00-18

HRU18-3.00-18 Homogeneous U-Seals

3" ID X 3-3/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston seal....
 In Stock: 0
$3.180
Add:
Quantity Discounts
1-9$3.180
10-99$2.550
100+$2.230
(image for) HRU18-3.25-18 Homogeneous U-Seals HRU18-3.25-18

HRU18-3.25-18 Homogeneous U-Seals

3-1/4" ID X 3-5/8" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 0
$8.760
Add:
Quantity Discounts
1-9$8.760
10-99$7.010
100+$6.140
(image for) HRU18-3.37-18 Homogeneous U-Seals HRU18-3.37-18

HRU18-3.37-18 Homogeneous U-Seals

3-3/8" ID X 3-3/4" OD X 3/16" HT Homogenous U-cups (block vees) are a non-loaded, single material U-cup. The HRU seal is popular in low pressure applications where a low friction seal would be beneficial. The seal is most commonly used in pneumatic applications as a rod or piston...
 In Stock: 0
$8.920
Add:
Quantity Discounts
1-9$8.920
10-99$7.140
100+$6.250
Displaying 1 to 22 (of 22 Products)