3/8" 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 4 (of 4 Products)
Product Image Model Product Name Qty. Price Quantity Discounts
(image for) HRU37-11.25-37 Homogeneous U-Seals HRU37-11.25-37

HRU37-11.25-37 Homogeneous U-Seals

11-1/4" ID X 12" OD X 3/8" 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. The design is suited for situations where space is limited or as an O-Ring replacement. The HRU seal is typically made from an 80 durometer Nitrile...
 In Stock: 0
$69.370
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Quantity Discounts
1-9$69.370
10-99$55.500
100+$48.560
(image for) HRU37-2.50-37 Homogeneous U-Seals HRU37-2.50-37

HRU37-2.50-37 Homogeneous U-Seals

2-1/2" ID X 3-1/4" OD X 3/8" 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. The design is suited for situations where space is limited or as an O-Ring replacement. The HRU seal is typically made from an 80 durometer Nitrile...
 In Stock: 0
$7.170
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Quantity Discounts
1-9$7.170
10-99$5.740
100+$5.020
(image for) HRU37-2.75-37 Homogeneous U-Seals HRU37-2.75-37

HRU37-2.75-37 Homogeneous U-Seals

2-3/4" ID X 3-1/2" OD X 3/8" 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. The design is suited for situations where space is limited or as an O-Ring replacement. The HRU seal is typically made from an 80 durometer Nitrile...
 In Stock: 0
$7.510
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Quantity Discounts
1-9$7.510
10-99$6.010
100+$5.260
(image for) HRU37-9.25-37 Homogeneous U-Seals HRU37-9.25-37

HRU37-9.25-37 Homogeneous U-Seals

9-1/4" ID X 10" OD X 3/8" 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. The design is suited for situations where space is limited or as an O-Ring replacement. The HRU seal is typically made from an 80 durometer Nitrile but...
 In Stock: 0
$40.850
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Quantity Discounts
1-9$40.850
10-99$32.680
100+$28.600
Displaying 1 to 4 (of 4 Products)